#VU85931 Inclusion of Sensitive Information in Log Files in Glibc - CVE-2022-39046

Vulnerability identifier: #VU85931

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-39046

CWE-ID: CWE-532

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Glibc
Universal components / Libraries / Libraries used by multiple products

Vendor: GNU

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to the software can store potentially sensitive data into a log file. When the syslog() function is passed a crafted input string larger than 1024 bytes, it reads uninitialized memory from the heap and prints it to the target log file, potentially revealing a portion of the contents of the heap.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Glibc: 2.36 - 2.36.9000

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External links
https://sourceware.org/bugzilla/show_bug.cgi?id=29536
https://security.netapp.com/advisory/ntap-20221104-0002/
https://security.gentoo.org/glsa/202310-03
https://www.openwall.com/lists/oss-security/2024/01/30/8
https://www.openwall.com/lists/oss-security/2024/01/30/6

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.