USN-3834-1: Perl vulnerabilities

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• perl - Practical Extraction and Report Language

Details

Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv.
An attacker could use this issue to cause Perl to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2018-18311)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10.
(CVE-2018-18312)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service. (CVE-2018-18313)

Jakub Wilk discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service. This issue only affected Ubuntu 16.04
LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18314)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.10

• perl - 5.26.2-7ubuntu0.1

Ubuntu 18.04

• perl - 5.26.1-6ubuntu0.3

Ubuntu 16.04

• perl - 5.22.1-9ubuntu0.6

Ubuntu 14.04

• perl - 5.18.2-2ubuntu1.7

In general, a standard system update will make all the necessary changes.

References

• CVE-2018-18311
• CVE-2018-18312
• CVE-2018-18313
• CVE-2018-18314

Related notices

• USN-3834-2