Debian Security Advisory

DSA-4172-1 perl -- security update

Date Reported:
14 Apr 2018
Affected Packages:
Security database references:
In Mitre's CVE dictionary: CVE-2018-6797, CVE-2018-6798, CVE-2018-6913.
More information:

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

  • CVE-2018-6797

    Brian Carpenter reported that a crafted regular expression could cause a heap buffer write overflow, with control over the bytes written.

  • CVE-2018-6798

    Nguyen Duc Manh reported that matching a crafted locale dependent regular expression can cause a heap-based buffer over-read and potentially information disclosure.

  • CVE-2018-6913

    GwanYeong Kim reported that 'pack()' could cause a heap buffer write overflow with a large item count.

For the oldstable distribution (jessie), these problems have been fixed in version 5.20.2-3+deb8u10. The oldstable distribution (jessie) update contains only a fix for CVE-2018-6913.

For the stable distribution (stretch), these problems have been fixed in version 5.24.1-3+deb9u3.

We recommend that you upgrade your perl packages.

For the detailed security status of perl please refer to its security tracker page at: