Buffer overflow in Perl - CVE-2017-12883
Published: September 19, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32068
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-12883
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.
Buffer overflow in the S_grok_bslash_N function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to disclose sensitive information or cause a denial of service (application crash) via a crafted regular expression with an invalid 'N{U+...}' escape.
Affected software
Perl
perl (Alpine package)
perl
Fedora
perl (Alpine package)
perl
Fedora
How to mitigate CVE-2017-12883
Install update from vendor's website.
perl (Alpine package) - update to 5.22.3-r0
perl - addressed in versions 5.24.3-388.fc25, 5.24.3-389.fc25, 5.24.3-394.fc26, 5.24.3-395.fc26, 5.26.1-400.fc27, 5.26.1-401.fc27
perl - addressed in versions 5.24.3-388.fc25, 5.24.3-389.fc25, 5.24.3-394.fc26, 5.24.3-395.fc26, 5.26.1-400.fc27, 5.26.1-401.fc27
External References
- http://mirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CVE-2017-12883.patch
- http://www.debian.org/security/2017/dsa-3982
- http://www.securityfocus.com/bid/100852
- https://bugzilla.redhat.com/show_bug.cgi?id=1492093
- https://perl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f#patch1
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1
- https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1
- https://rt.perl.org/Public/Bug/Display.html?id=131598
- https://security.netapp.com/advisory/ntap-20180426-0001/
- https://www.oracle.com/security-alerts/cpujul2020.html