Improper input validation in Perl
CVE-2015-8853
The (1) S_reghop3, (2) S_reghop4, and (3) S_reghopmaybe3 functions in regexec.c in Perl before 5.24.0 allow context-dependent attackers to cause a denial of service (infinite loop) via crafted utf-8 data, as demonstrated by "a\x80."
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.026 (83.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Perl
- Fedoraproject Fedora — versions 22
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@debian.org (vendor-advisory, x_refsource_GENTOO)
- security@debian.org (mailing-list, x_refsource_MLIST)
- security@debian.org (x_refsource_UBUNTU, vendor-advisory)
- security@debian.org (mailing-list, x_refsource_MLIST)
- security@debian.org (x_refsource_CONFIRM)
- security@debian.org (x_refsource_CONFIRM)
- security@debian.org (x_refsource_CONFIRM)
- security@debian.org (vdb-entry, x_refsource_BID)
- security@debian.org (x_refsource_CONFIRM)
- security@debian.org (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2015-8853?
- CVE-2015-8853 is a high-severity vulnerability in Perl, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-05-25.
- How severe is CVE-2015-8853?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-8853 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.