critical
9.8
CWE
119
Advisory Published
Updated

CVE-2015-8391: Buffer Overflow

First published: Wed Dec 02 2015(Updated: )

The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles certain [: nesting, which allows remote attackers to cause a denial of service (CPU consumption) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/pcre<8.38
8.38
PHP<7.0.3
7.0.3
pcre pcre<8.38
Oracle Linux=7
Fedora=22
redhat enterprise Linux desktop=7.0
redhat enterprise Linux eus=7.2
redhat enterprise Linux eus=7.3
redhat enterprise Linux eus=7.4
redhat enterprise Linux eus=7.5
redhat enterprise Linux eus=7.6
redhat enterprise Linux eus=7.7
redhat enterprise Linux server=7.0
redhat enterprise Linux server aus=7.2
redhat enterprise Linux server aus=7.3
redhat enterprise Linux server aus=7.4
redhat enterprise Linux server aus=7.6
redhat enterprise Linux server aus=7.7
redhat enterprise Linux server tus=7.2
redhat enterprise Linux server tus=7.3
redhat enterprise Linux server tus=7.6
redhat enterprise Linux server tus=7.7
redhat enterprise Linux workstation=7.0
PHP>=5.5.0<5.5.32
PHP>=5.6.0<5.6.18
PHP>=7.0.0<7.0.3

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2015-8391?

    CVE-2015-8391 has a severity level classified as a denial of service vulnerability that can lead to high CPU consumption.

  • How do I fix CVE-2015-8391?

    To fix CVE-2015-8391, upgrade to PCRE version 8.38 or later.

  • What software is affected by CVE-2015-8391?

    CVE-2015-8391 affects PCRE versions prior to 8.38 and certain versions of PHP up to 7.0.3.

  • Can CVE-2015-8391 be exploited remotely?

    Yes, CVE-2015-8391 can be exploited remotely by sending crafted regular expressions.

  • What impact can CVE-2015-8391 have on systems?

    CVE-2015-8391 can lead to denial of service due to high CPU consumption, potentially affecting system availability.

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