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CVE-2017-11164

Published: 11 July 2017

In PCRE 8.41, the OP_KETRMAX feature in the match function in pcre_exec.c allows stack exhaustion (uncontrolled recursion) when processing a crafted regular expression.

Notes

AuthorNote
sbeattie
reproducer in oss-security posting.
to exploit this requires an application take regular
expressions as untrusted input (not just the string to match
against), which is generally not safe to do with pcre.

Priority

Negligible

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
pcre3
Launchpad, Ubuntu, Debian
groovy Ignored
(end of life)
kinetic Ignored
(end of life, was needed)
hirsute Ignored
(end of life)
xenial Ignored
(vendor disputes CVE)
impish Ignored
(end of life)
artful Ignored
(end of life)
bionic Needed

cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Needed

jammy Needed

lunar Ignored
(end of life, was needed)
trusty Needed

upstream Needed

yakkety Ignored
(end of life)
zesty Ignored
(end of life)
mantic Needed

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H