Vulnerability in Gnu Glibc
CVE-2018-20796
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\\1\\1|t1|\\\2537)+' in grep.
EPSS: 0.058 (92.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (Exploit, Mailing List, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (Exploit, Mailing List, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2018-20796?
- CVE-2018-20796 is a high-severity vulnerability in Gnu Glibc, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2019-02-26.
- How severe is CVE-2018-20796?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-20796 known to be exploited?
- 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.