Buffer overflow in Perl
CVE-2017-12883
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.059 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.059 · newest: 0.059 · change: 0.000
Affected products
- Perl — versions 5.26.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.debian.org/security/2017/dsa-3982 (vendor-advisory)
- www.securityfocus.com/bid/100852 (VDB Entry, Third Party Advisory, vdb-entry)
- www.oracle.com/security-alerts/cpujul2020.html
- perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1 (Release Notes, Vendor Advisory)
- perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1 (Release Notes, Vendor Advisory)
- security.netapp.com/advisory/ntap-20180426-0001/
- mirror.cucumberlinux.com/cucumber/cucumber-1.0/source/lang-base/perl/patches/CV… (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, VDB Entry, Third Party Advisory, Issue Tracking)
- rt.perl.org/Public/Bug/Display.html
- perl5.git.perl.org/perl.git/commitdiff/2be4edede4ae226e2eebd4eff28cedd2041f300f (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12883?
- CVE-2017-12883 is a critical-severity vulnerability in Perl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.1/10. Published 2017-09-19.
- How severe is CVE-2017-12883?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2017-12883 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.