Denial of Service Vulnerability in PCRE by Vendor
CVE-2015-8394

9.8CRITICAL

Key Information:

Vendor

Pcre

Status
Perl Compatible Regular Expression Library
Vendor
CVE Published:
2 December 2015

What is CVE-2015-8394?

The PCRE library versions prior to 8.38 contain a vulnerability that mishandles certain regular expression conditions, specifically (?() and (?(R)). This flaw can be exploited by remote attackers to induce a denial of service situation through integer overflow, resulting in application crashes. A proof-of-concept has been noted utilizing a JavaScript regular expression in the Konqueror web browser, showcasing the potential impact of this vulnerability. It is crucial for users to update to protected versions to mitigate risks associated with this flaw.

References

http://www.openwall.com/lists/oss-security/2015/11/29/1
mailing-list
http://www.securityfocus.com/bid/82990
vdb-entry
http://lists.fedoraproject.org/pipermail/package-announce...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.