CVE-2018-6797
9.8
CRITICAL · CVSS 3.0 · EPSS 6.5% (pctl 94)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow, with control over the bytes written.
Scoring
| CVSS | 9.8 (CRITICAL, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 6.48% — more likely to be exploited than 94% of all CVEs |
| Weakness | CWE-787 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2018-04-17 |
| Last modified | 2026-06-17 |
Affected (5)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| perl | perl |
| redhat | enterprise linux server |
| redhat | enterprise linux workstation |
References
- http://www.securitytracker.com/id/1040681
- http://www.securitytracker.com/id/1042004
- https://access.redhat.com/errata/RHSA-2018:1192
- https://rt.perl.org/Public/Bug/Display.html?id=132227
- https://security.gentoo.org/glsa/201909-01
- https://usn.ubuntu.com/3625-1/
- https://www.debian.org/security/2018/dsa-4172
- https://www.oracle.com/security-alerts/cpujul2020.html
- http://www.securitytracker.com/id/1040681
- http://www.securitytracker.com/id/1042004
- https://access.redhat.com/errata/RHSA-2018:1192
- https://rt.perl.org/Public/Bug/Display.html?id=132227
- https://security.gentoo.org/glsa/201909-01
- https://usn.ubuntu.com/3625-1/
- https://www.debian.org/security/2018/dsa-4172
- https://www.oracle.com/security-alerts/cpujul2020.html
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