Slackware Linux update for libssh
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-1667 CVE-2023-2283 |
| CWE-ID | CWE-20 CWE-287 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Slackware Linux Operating systems & Components / Operating system libssh Operating systems & Components / Operating system package or component |
| Vendor | Slackware |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU75741
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-1667
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to multiple errors in kex implementation, related to kex guessing algorithm. A remote attacker can bypass implemented security restrictions.
Update the affected package libssh.
Vulnerable software versionsSlackware Linux: 14.2 - 15.0
libssh: before 0.10.5
External linkshttp://www.slackware.com/security/viewer.php?l=slackware-security&y=2023&m=slackware-security.391025
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper Authentication
EUVDB-ID: #VU75740
Risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-2283
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error within the pki_verify_data_signature() function in pki_crypto.c. The pki_key_check_hash_compatible() function can return SSH_OK value if memory allocation error happens later in the function. The A remote attacker can bypass authentication process and gain unauthorized access to the system.
MitigationUpdate the affected package libssh.
Vulnerable software versionsSlackware Linux: 14.2 - 15.0
libssh: before 0.10.5
External linkshttp://www.slackware.com/security/viewer.php?l=slackware-security&y=2023&m=slackware-security.391025
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
