CVE-2018-20796

Public Exploit

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.00% Top 20%
Vendor Advisory gnu.org Vendor Advisory gnu.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.netapp.com/advisory/ntap-20190315-0002/ third party advisory patch
https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html mailing list exploit vendor advisory
http://www.securityfocus.com/bid/107160 vdb entry third party advisory
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141 mailing list exploit vendor advisory
https://support.f5.com/csp/article/K26346590?utm_source=f5support&%3Butm_medium=RSS

Frequently Asked Questions

What is the severity of CVE-2018-20796?
CVE-2018-20796 has been scored as a high severity vulnerability.
How to fix CVE-2018-20796?
To fix CVE-2018-20796, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20796 being actively exploited in the wild?
It is possible that CVE-2018-20796 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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