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
EPSS: 0.059 (92.5th percentile) — read the EPSS interpretation.
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.
Affected products
- Perl — versions 5.26.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Patch, VDB Entry, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (x_refsource_CONFIRM, 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.