CVE-2012-4559
Gentoo Linux Security Advisory 201402-26
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
Múltiples vulnerabilidades de doble liberación en las funciones (1) agent_sign_data en agent.c, (2) channel_request en channels.c, (3) ssh_userauth_pubkey en auth.c, (4) sftp_parse_attr_3 en sftp.c, y (5) try_publickey_from_file en keyfiles.c en libssh antes de v0.5.3 permiten a atacantes remotos provocar una denegación de servicio (caída de la aplicación) y posiblemente ejecutar código de su elección a través de vectores no especificados.
Multiple double free flaws, buffer overflow flaws, invalid free flaws, and improper overflow checks in libssh before 0.5.3 could enable a denial of service attack against libssh clients, or possibly arbitrary code execution. Yong Chuan Koh discovered that libssh incorrectly handled certain negotiation requests. A remote attacker could use this to cause libssh to crash, resulting in a denial of service.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2012-08-21 CVE Reserved
- 2012-11-27 CVE Published
- 2024-08-06 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-399: Resource Management Errors
CAPEC
References (13)
| URL | Tag | Source |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2012/11/20/3 | Mailing List |
|
| http://www.securityfocus.com/bid/56604 | Vdb Entry | |
| https://bugzilla.redhat.com/show_bug.cgi?id=871612 | X_refsource_misc | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/80218 | Vdb Entry |
| URL | Date | SRC |
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| URL | Date | SRC |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | <= 0.5.2 Search vendor "Libssh" for product "Libssh" and version " <= 0.5.2" | - |
Affected
| ||||||
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | 0.4.7 Search vendor "Libssh" for product "Libssh" and version "0.4.7" | - |
Affected
| ||||||
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | 0.4.8 Search vendor "Libssh" for product "Libssh" and version "0.4.8" | - |
Affected
| ||||||
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | 0.5.0 Search vendor "Libssh" for product "Libssh" and version "0.5.0" | - |
Affected
| ||||||
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | 0.5.0 Search vendor "Libssh" for product "Libssh" and version "0.5.0" | rc1 |
Affected
| ||||||
| Libssh Search vendor "Libssh" | Libssh Search vendor "Libssh" for product "Libssh" | 0.5.1 Search vendor "Libssh" for product "Libssh" and version "0.5.1" | - |
Affected
| ||||||