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Debian Security Advisory DSA-4347-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
November 29, 2018 https://www.debian.org/security/faq
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Package : perl
CVE ID : CVE-2018-18311 CVE-2018-18312 CVE-2018-18313 CVE-2018-18314

Multiple vulnerabilities were discovered in the implementation of the
Perl programming language. The Common Vulnerabilities and Exposures
project identifies the following problems:

CVE-2018-18311

Jayakrishna Menon and Christophe Hauser discovered an integer
overflow vulnerability in Perl_my_setenv leading to a heap-based
buffer overflow with attacker-controlled input.

CVE-2018-18312

Eiichi Tsukata discovered that a crafted regular expression could
cause a heap-based buffer overflow write during compilation,
potentially allowing arbitrary code execution.

CVE-2018-18313

Eiichi Tsukata discovered that a crafted regular expression could
cause a heap-based buffer overflow read during compilation which
leads to information leak.

CVE-2018-18314

Jakub Wilk discovered that a specially crafted regular expression
could lead to a heap-based buffer overflow.

For the stable distribution (stretch), these problems have been fixed in
version 5.24.1-3+deb9u5.

We recommend that you upgrade your perl packages.

For the detailed security status of perl please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/perl

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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