Inefficient Regular Expression Complexity Affecting libcrypt-nss package, versions <0:2.26-62.amzn2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published9 Nov 2022
- disclosed26 Feb 2019
Introduced: 26 Feb 2019
CVE-2009-5155 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 libcrypt-nss to version 0:2.26-62.amzn2 or higher.
This issue was patched in ALAS2-2022-1869.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libcrypt-nss package and not the libcrypt-nss package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
In the GNU C Library (aka glibc or libc6) before 2.28, parse_reg_exp in posix/regcomp.c misparses alternatives, which allows attackers to cause a denial of service (assertion failure and application exit) or trigger an incorrect result by attempting a regular-expression match.
References
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-5155
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb04c21373e2a2885f3d52ff192b0499afe3c672
- https://support.f5.com/csp/article/K64119434?utm_source=f5support&utm_medium=RSS
- http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=5513b40999149090987a0341c018d05d3eea1272
- https://debbugs.gnu.org/cgi/bugreport.cgi?bug=22793
- https://debbugs.gnu.org/cgi/bugreport.cgi?bug=32806
- https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34238
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190315-0002/
- https://sourceware.org/bugzilla/show_bug.cgi?id=11053
- https://sourceware.org/bugzilla/show_bug.cgi?id=18986
- https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Bh=eb04c21373e2a2885f3d52ff192b0499afe3c672
- https://support.f5.com/csp/article/K64119434
- https://support.f5.com/csp/article/K64119434?utm_source=f5support&%3Butm_medium=RSS