ghsa-h9jw-g3xj-5hwg
Vulnerability from github
Published
2023-05-26 18:30
Modified
2023-12-22 12:31
Severity ?
Details
A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in thepki_verify_data_signature
function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value rc,
which is initialized to SSH_ERROR and later rewritten to save the return value of the function call pki_key_check_hash_compatible.
The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls goto error
returning SSH_OK.
{ "affected": [], "aliases": [ "CVE-2023-2283" ], "database_specific": { "cwe_ids": [ "CWE-287" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2023-05-26T18:15:13Z", "severity": "MODERATE" }, "details": "A vulnerability was found in libssh, where the authentication check of the connecting client can be bypassed in the`pki_verify_data_signature` function in memory allocation problems. This issue may happen if there is insufficient memory or the memory usage is limited. The problem is caused by the return value `rc,` which is initialized to SSH_ERROR and later rewritten to save the return value of the function call `pki_key_check_hash_compatible.` The value of the variable is not changed between this point and the cryptographic verification. Therefore any error between them calls `goto error` returning SSH_OK.", "id": "GHSA-h9jw-g3xj-5hwg", "modified": "2023-12-22T12:31:44Z", "published": "2023-05-26T18:30:21Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2283" }, { "type": "WEB", "url": "https://access.redhat.com/security/cve/CVE-2023-2283" }, { "type": "WEB", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2189736" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN" }, { "type": "WEB", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27PD44ALQTZXX7K6JAM3BXBUHYA6DFFN" }, { "type": "WEB", "url": "https://security.gentoo.org/glsa/202312-05" }, { "type": "WEB", "url": "https://security.netapp.com/advisory/ntap-20240201-0005" }, { "type": "WEB", "url": "https://www.libssh.org/security/advisories/CVE-2023-2283.txt" }, { "type": "WEB", "url": "http://packetstormsecurity.com/files/172861/libssh-0.9.6-0.10.4-pki_verify_data_signature-Authorization-Bypass.html" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "type": "CVSS_V3" } ] }
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Sightings
Author | Source | Type | Date |
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Nomenclature
- 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.