CVE-2018-18314
Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
02 Description
Perl before 5.26.3 has a buffer overflow via a crafted regular expression that triggers invalid write operations.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 6.06% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 93.0% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-12-07 21:00Z7 YR AGO
- Last updated
- 2024-08-05 11:08Z2 YR AGO
- Reserved
- 2018-10-14
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 7e692fc7da24fb86238680a86a07072d8c6ba0f5204960ad5f7048c8bba30b1e
05 Affected products
06 References
- www.debian.orgDSA-4347https://www.debian.org/security/2018/dsa-4347
- www.securityfocus.com106145http://www.securityfocus.com/bid/106145
- www.securitytracker.com1042181http://www.securitytracker.com/id/1042181
- access.redhat.comRHSA-2019:0010https://access.redhat.com/errata/RHSA-2019:0010
- lists.fedoraproject.orgFEDORA-2018-9dbe983805https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/
- access.redhat.comRHSA-2019:0001https://access.redhat.com/errata/RHSA-2019:0001
- usn.ubuntu.comUSN-3834-1https://usn.ubuntu.com/3834-1/
- security.gentoo.orgGLSA-201909-01https://security.gentoo.org/glsa/201909-01
- www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2020.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20190221-0003/
- metacpan.orghttps://metacpan.org/changes/release/SHAY/perl-5.26.3
- github.comhttps://github.com/Perl/perl5/commit/19a498a461d7c81ae3507c450953d1148efecf4f
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1646751
- rt.perl.orghttps://rt.perl.org/Ticket/Display.html?id=131649
07 Fixed in
Debian 12
- perl Fixed in 5.28.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- perl Fixed in 5.28.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- perl Fixed in 5.28.0-3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- perl Fixed in 5.22.1-9ubuntu0.6
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- perl Fixed in 5.26.1-6ubuntu0.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.