CWE-203
AllowedObservable Discrepancy
Abstraction: Base · Status: Incomplete
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.
903 vulnerabilities reference this CWE, most recent first.
GHSA-Q8X5-7V94-RWPV
Vulnerability from github – Published: 2025-01-22 18:31 – Updated: 2025-02-03 15:32In certain circumstances, an issue in Arm Cortex-A72 (revisions before r1p0), Cortex-A73 and Cortex-A75 may allow an adversary to gain a weak form of control over the victim's branch history.
{
"affected": [],
"aliases": [
"CVE-2024-10929"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-22T16:15:28Z",
"severity": "MODERATE"
},
"details": "In certain circumstances, an issue in Arm Cortex-A72 (revisions before r1p0), Cortex-A73 and Cortex-A75 may allow an adversary to gain a weak form of control over the victim\u0027s branch history.",
"id": "GHSA-q8x5-7v94-rwpv",
"modified": "2025-02-03T15:32:02Z",
"published": "2025-01-22T18:31:55Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-10929"
},
{
"type": "WEB",
"url": "https://developer.arm.com/Arm%20Security%20Center/Spectre-BSE"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q8X9-R7FC-QFJV
Vulnerability from github – Published: 2023-11-13 21:30 – Updated: 2025-09-29 15:30UrBackup Server 2.5.31 allows brute-force enumeration of user accounts because a failure message confirms that a username is not valid.
{
"affected": [],
"aliases": [
"CVE-2023-47102"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-11-07T06:15:12Z",
"severity": "MODERATE"
},
"details": "UrBackup Server 2.5.31 allows brute-force enumeration of user accounts because a failure message confirms that a username is not valid.",
"id": "GHSA-q8x9-r7fc-qfjv",
"modified": "2025-09-29T15:30:28Z",
"published": "2023-11-13T21:30:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-47102"
},
{
"type": "WEB",
"url": "https://nitipoom-jaroonchaipipat.github.io/security-research-portal/2023-47102"
},
{
"type": "WEB",
"url": "https://quantiano.github.io/cve-2023-47102"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q95H-VC86-HV77
Vulnerability from github – Published: 2022-05-24 16:57 – Updated: 2023-09-25 19:35wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or--enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.0.0"
},
"package": {
"ecosystem": "PyPI",
"name": "wolfcrypt"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.1.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-13628"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": true,
"github_reviewed_at": "2023-07-17T22:25:50Z",
"nvd_published_at": "2019-10-03T14:15:00Z",
"severity": "MODERATE"
},
"details": "wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without `--enable-fpecc`, `--enable-sp`, or` --enable-sp-math`) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.",
"id": "GHSA-q95h-vc86-hv77",
"modified": "2023-09-25T19:35:50Z",
"published": "2022-05-24T16:57:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-13628"
},
{
"type": "WEB",
"url": "https://eprint.iacr.org/2011/232.pdf"
},
{
"type": "PACKAGE",
"url": "https://github.com/wolfSSL/wolfcrypt-py"
},
{
"type": "WEB",
"url": "https://minerva.crocs.fi.muni.cz"
},
{
"type": "WEB",
"url": "https://tches.iacr.org/index.php/TCHES/article/view/7337"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2019/10/02/2"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "wolfCrypt leaks cryptographic information via timing side channel"
}
GHSA-Q9FM-H69X-8J48
Vulnerability from github – Published: 2025-01-27 18:32 – Updated: 2025-01-27 18:32IBM Sterling File Gateway 6.0.0.0 through 6.1.2.5 and 6.2.0.0 through 6.2.0.1 could allow an authenticated user to enumerate usernames due to an observable discrepancy in request responses.
{
"affected": [],
"aliases": [
"CVE-2023-47159"
],
"database_specific": {
"cwe_ids": [
"CWE-203",
"CWE-204"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-01-27T16:15:29Z",
"severity": "MODERATE"
},
"details": "IBM Sterling File Gateway 6.0.0.0 through 6.1.2.5 and 6.2.0.0 through 6.2.0.1 could allow an authenticated user to enumerate usernames due to an observable discrepancy in request responses.",
"id": "GHSA-q9fm-h69x-8j48",
"modified": "2025-01-27T18:32:00Z",
"published": "2025-01-27T18:32:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-47159"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7176083"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q9X7-RRJ5-J549
Vulnerability from github – Published: 2022-05-24 19:01 – Updated: 2023-10-16 18:30A vulnerability in Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to enumerate user accounts. This vulnerability is due to the improper handling of HTTP headers. An attacker could exploit this vulnerability by sending authenticated requests to an affected system. A successful exploit could allow the attacker to compare the HTTP responses that are returned by the affected system to determine which accounts are valid user accounts.
{
"affected": [],
"aliases": [
"CVE-2021-1486"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-05-06T13:15:00Z",
"severity": "MODERATE"
},
"details": "A vulnerability in Cisco SD-WAN vManage Software could allow an unauthenticated, remote attacker to enumerate user accounts. This vulnerability is due to the improper handling of HTTP headers. An attacker could exploit this vulnerability by sending authenticated requests to an affected system. A successful exploit could allow the attacker to compare the HTTP responses that are returned by the affected system to determine which accounts are valid user accounts.",
"id": "GHSA-q9x7-rrj5-j549",
"modified": "2023-10-16T18:30:24Z",
"published": "2022-05-24T19:01:36Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-1486"
},
{
"type": "WEB",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanage-enumeration-64eNnDKy"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-Q9XJ-HCW7-RM34
Vulnerability from github – Published: 2022-03-31 00:00 – Updated: 2022-04-06 00:01In ContextImpl, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions:Android ID: A-207133709
{
"affected": [],
"aliases": [
"CVE-2021-39754"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-03-30T16:15:00Z",
"severity": "MODERATE"
},
"details": "In ContextImpl, there is a possible way to determine whether an app is installed, without query permissions, due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions:Android ID: A-207133709",
"id": "GHSA-q9xj-hcw7-rm34",
"modified": "2022-04-06T00:01:53Z",
"published": "2022-03-31T00:00:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39754"
},
{
"type": "WEB",
"url": "https://source.android.com/security/bulletin/android-12l"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QC79-WMWR-7FJH
Vulnerability from github – Published: 2022-05-24 19:07 – Updated: 2022-05-24 19:07In Rust SGX 1.1.3, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.
{
"affected": [],
"aliases": [
"CVE-2021-24117"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-14T14:15:00Z",
"severity": "MODERATE"
},
"details": "In Rust SGX 1.1.3, a side-channel vulnerability in base64 PEM file decoding allows system-level (administrator) attackers to obtain information about secret RSA keys via a controlled-channel and side-channel attack on software running in isolated environments that can be single stepped, especially Intel SGX.",
"id": "GHSA-qc79-wmwr-7fjh",
"modified": "2022-05-24T19:07:59Z",
"published": "2022-05-24T19:07:59Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-24117"
},
{
"type": "WEB",
"url": "https://github.com/dingelish/rust-base64/commit/a554b7ae880553db6dde8a387101a093911d5b2a"
},
{
"type": "WEB",
"url": "https://docs.rs/crate/sgx_tstd/1.1.1"
},
{
"type": "WEB",
"url": "https://github.com/UzL-ITS/util-lookup/blob/main/cve-vulnerability-publication.md"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QCCG-WVF8-RVFQ
Vulnerability from github – Published: 2023-10-30 18:30 – Updated: 2023-11-07 03:30In Usage Stats Service, there is a possible way to determine whether an app is installed, without query permissions due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
{
"affected": [],
"aliases": [
"CVE-2022-20264"
],
"database_specific": {
"cwe_ids": [
"CWE-203"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-10-30T17:15:47Z",
"severity": "MODERATE"
},
"details": "In Usage Stats Service, there is a possible way to determine whether an app is installed, without query permissions due to side channel information disclosure. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.",
"id": "GHSA-qccg-wvf8-rvfq",
"modified": "2023-11-07T03:30:25Z",
"published": "2023-10-30T18:30:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-20264"
},
{
"type": "WEB",
"url": "https://source.android.com/docs/security/bulletin/android-14"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-QCGX-7P5F-HXVR
Vulnerability from github – Published: 2022-03-29 22:11 – Updated: 2022-03-29 22:11Description
It was possible to confirm a single character of a user's password hash (just the hash, not the password) using a specially crafted regular expression filter in the users endpoint of the REST API. Many requests could eventually uncover the entire hash.
The hash would not be in the response, however the presence or absence of a result would confirm if the character was in the right position. It would take a long time since the API has throttling enabled by default.
Additionally, the REST API would need to be enabled, as well as the users endpoint. Both of which are disabled by default.
Resolution
Filtering by password or password hash has been disabled.
Credits
We would like to thank Thibaud Kehler for reporting the issue.
{
"affected": [
{
"package": {
"ecosystem": "Packagist",
"name": "statamic/cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.39"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Packagist",
"name": "statamic/cms"
},
"ranges": [
{
"events": [
{
"introduced": "3.3.0"
},
{
"fixed": "3.3.2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-24784"
],
"database_specific": {
"cwe_ids": [
"CWE-200",
"CWE-203",
"CWE-326"
],
"github_reviewed": true,
"github_reviewed_at": "2022-03-29T22:11:45Z",
"nvd_published_at": "2022-03-25T22:15:00Z",
"severity": "LOW"
},
"details": "## Description\n\nIt was possible to confirm a single character of a user\u0027s password hash (just the hash, not the password) using a specially crafted regular expression filter in the users endpoint of the REST API. Many requests could eventually uncover the entire hash.\n\nThe hash would not be in the response, however the presence or absence of a result would confirm if the character was in the right position. It would take a long time since the API has throttling enabled by default.\n\nAdditionally, the REST API would need to be enabled, as well as the users endpoint. Both of which are disabled by default.\n\n## Resolution\n\nFiltering by password or password hash has been disabled.\n\n## Credits\n\nWe would like to thank Thibaud Kehler for reporting the issue.",
"id": "GHSA-qcgx-7p5f-hxvr",
"modified": "2022-03-29T22:11:45Z",
"published": "2022-03-29T22:11:45Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/statamic/cms/security/advisories/GHSA-qcgx-7p5f-hxvr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-24784"
},
{
"type": "WEB",
"url": "https://github.com/statamic/cms/issues/5604"
},
{
"type": "WEB",
"url": "https://github.com/statamic/cms/pull/5568"
},
{
"type": "PACKAGE",
"url": "https://github.com/statamic/cms"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Discoverability of user password hash in Statamic CMS"
}
GHSA-QF78-7RGR-8JF5
Vulnerability from github – Published: 2023-01-01 18:30 – Updated: 2023-01-09 18:30A vulnerability classified as problematic was found in Ziftr primecoin up to 0.8.4rc1. Affected by this vulnerability is the function HTTPAuthorized of the file src/bitcoinrpc.cpp. The manipulation of the argument strUserPass/strRPCUserColonPass leads to observable timing discrepancy. Upgrading to version 0.8.4rc2 is able to address this issue. The name of the patch is cdb3441b5cd2c1bae49fae671dc4a496f7c96322. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217171.
{
"affected": [],
"aliases": [
"CVE-2013-10006"
],
"database_specific": {
"cwe_ids": [
"CWE-203",
"CWE-208"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-01-01T17:15:00Z",
"severity": "HIGH"
},
"details": "A vulnerability classified as problematic was found in Ziftr primecoin up to 0.8.4rc1. Affected by this vulnerability is the function HTTPAuthorized of the file src/bitcoinrpc.cpp. The manipulation of the argument strUserPass/strRPCUserColonPass leads to observable timing discrepancy. Upgrading to version 0.8.4rc2 is able to address this issue. The name of the patch is cdb3441b5cd2c1bae49fae671dc4a496f7c96322. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217171.",
"id": "GHSA-qf78-7rgr-8jf5",
"modified": "2023-01-09T18:30:18Z",
"published": "2023-01-01T18:30:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2013-10006"
},
{
"type": "WEB",
"url": "https://github.com/Ziftr/primecoin/commit/cdb3441b5cd2c1bae49fae671dc4a496f7c96322"
},
{
"type": "WEB",
"url": "https://github.com/Ziftr/primecoin/releases/tag/v0.8.4rc2"
},
{
"type": "WEB",
"url": "https://vuldb.com/?ctiid.217171"
},
{
"type": "WEB",
"url": "https://vuldb.com/?id.217171"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-46
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering
An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.