Information disclosure in GNU Glibc
CVE-2022-39046
An issue was discovered in the GNU C Library (glibc) 2.36. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: +0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sourceware.org/bugzilla/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20221104-0002/ (Third Party Advisory)
- security.gentoo.org/glsa/202310-03 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2024/01/30/8 (mailing-list)
- www.openwall.com/lists/oss-security/2024/01/30/6 (mailing-list)
- packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.ht…
- seclists.org/fulldisclosure/2024/Feb/3 (mailing-list)
Frequently asked questions
- What is CVE-2022-39046?
- CVE-2022-39046 is a high-severity vulnerability in GNU Glibc, classified under Insertion of Sensitive Information into Log File. CVSS score: 7.5/10. Published 2022-08-31.
- How severe is CVE-2022-39046?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2022-39046 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.