gsd-2020-13757
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-13757",
"description": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "GSD-2020-13757",
"references": [
"https://www.suse.com/security/cve/CVE-2020-13757.html",
"https://access.redhat.com/errata/RHSA-2020:3541",
"https://access.redhat.com/errata/RHSA-2020:3453",
"https://ubuntu.com/security/CVE-2020-13757",
"https://advisories.mageia.org/CVE-2020-13757.html",
"https://alas.aws.amazon.com/cve/html/CVE-2020-13757.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-13757"
],
"details": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"id": "GSD-2020-13757",
"modified": "2023-12-13T01:21:46.846099Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2020-13757",
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"affects": {
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"product": {
"product_data": [
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"product_name": "n/a",
"version": {
"version_data": [
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}
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}
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}
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"data_format": "MITRE",
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"data_version": "4.0",
"description": {
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"value": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation)."
}
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"name": "https://github.com/sybrenstuvel/python-rsa/issues/146",
"refsource": "MISC",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146"
},
{
"name": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667",
"refsource": "CONFIRM",
"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"name": "FEDORA-2020-253ebe55ff",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/"
},
{
"name": "FEDORA-2020-5ed5627d2b",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZYB65VNILRBTXL6EITQTH2PZPK7I23MW/"
},
{
"name": "USN-4478-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4478-1/"
}
]
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "==4.0",
"affected_versions": "Version 4.0",
"cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-327",
"CWE-937"
],
"date": "2020-09-02",
"description": "Python-RSA ignores leading `\\0` bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).",
"fixed_versions": [
"4.1"
],
"identifier": "CVE-2020-13757",
"identifiers": [
"CVE-2020-13757"
],
"not_impacted": "All versions before 4.0, all versions after 4.0",
"package_slug": "pypi/rsa",
"pubdate": "2020-06-01",
"solution": "Upgrade to version 4.1 or above.",
"title": "Use of a Broken or Risky Cryptographic Algorithm",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2020-13757"
],
"uuid": "c85bca57-da82-4958-915f-195da9baf28c"
}
]
},
"nvd.nist.gov": {
"configurations": {
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"description": {
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"value": "Python-RSA before 4.1 ignores leading \u0027\\0\u0027 bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation)."
}
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},
"problemtype": {
"problemtype_data": [
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"description": [
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"value": "CWE-327"
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},
"references": {
"reference_data": [
{
"name": "https://github.com/sybrenstuvel/python-rsa/issues/146",
"refsource": "MISC",
"tags": [
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],
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},
{
"name": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667",
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"url": "https://github.com/sybrenstuvel/python-rsa/issues/146#issuecomment-641845667"
},
{
"name": "FEDORA-2020-253ebe55ff",
"refsource": "FEDORA",
"tags": [
"Mailing List",
"Third Party Advisory"
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2KILTHBHNSDUCYV22ODLOKTICJJ7JQIQ/"
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},
{
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"refsource": "UBUNTU",
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"url": "https://usn.ubuntu.com/4478-1/"
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]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-03-01T03:09Z",
"publishedDate": "2020-06-01T19:15Z"
}
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.