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Fencer Vulns
medium 5.0

CVE-2008-0171 json

regex/v4/perl_matcher_non_recursive.hpp in the Boost regex library (aka Boost.Regex) in Boost 1.33 and 1.34 allows context-dependent attack…

published 2008-01-17 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-0183

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.7%
EPSS 2.7% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

regex/v4/perl_matcher_non_recursive.hpp in the Boost regex library (aka Boost.Regex) in Boost 1.33 and 1.34 allows context-dependent attackers to cause a denial of service (failed assertion and crash) via an invalid regular expression.

Patch / fix

  • boost RHEL 5 1.33.1-15.el5

red hat advisories RHSA-2012:0305

  • boost-legacy-base SLE Module for Legacy 15 SP2 1.66.0-1.4.1

suse advisories SUSE-RU-2021:1414-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2008-0171 updated cvss 4.6

boost regular expression memory corruption flaws

  • Red Hat Enterprise Linux (v. 5 server) boost 1.33.1-15.el5 Red Hat Enterprise Linux Desktop (v. 5 client) boost 1.33.1-15.el5 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) boost 1.33.1-15.el5
    fixed: vendor fix RHSA-2012:0305

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.69% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • svn.boost.org http://svn.boost.org/trac/boost/changeset/42745 referenced PoC, tagged "exploit" by a source, unverified
  • svn.boost.org http://svn.boost.org/trac/boost/changeset/42674 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.