Home/CVE/An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow,
CVE

CVE-2018-6797

An issue was discovered in Perl 5.18 through 5.26. A crafted regular expression can cause a heap-based buffer overflow,

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.

CRITICAL · CVSS 9.8 EPSS 0.01475
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules2 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

5
debian linuxall versions
perl>= 5.18 and <= 5.26
canonical ubuntu linuxall versions
redhat enterprise linux serverall versions
redhat enterprise linux workstationall versions
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPotential Perl Reverse Shell Execution
productmediumPerl Inline Command Execution
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD17 Apr 2018 · 08:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

5
suse-csafSUSE-SU-2018:1972-2
suse-csafSUSE-SU-2018:1972-1
suse-csafSUSE-SU-2018:1074-1
usnUSN-3625-1
rhsaRHSA-2018:1192Moderate
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securitytracker.com/id/1040681Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042004Third Party AdvisoryVDB Entry
https://rt.perl.org/Public/Bug/Display.html?id=132227PatchVendor Advisory
https://security.gentoo.org/glsa/201909-01
https://usn.ubuntu.com/3625-1/Third Party Advisory
https://www.debian.org/security/2018/dsa-4172Third Party Advisory
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