Moderate: liblouis security and bug fix update

Synopsis

Moderate: liblouis security and bug fix update

Type/Severity

Security Advisory: Moderate

Topic

An update for liblouis is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Liblouis is an open source braille translator and back-translator named in honor of Louis Braille. It features support for computer and literary braille, supports contracted and uncontracted translation for many languages and has support for hyphenation. New languages can easily be added through tables that support a rule or dictionary based approach. Liblouis also supports math braille (Nemeth and Marburg).

Security Fix(es):

• liblouis: Stack-based buffer overflow in function includeFile in compileTranslationTable.c (CVE-2018-11684)
  
• liblouis: Stack-based buffer overflow in function compileHyphenation in compileTranslationTable.c (CVE-2018-11685)
  
• liblouis: Segmentation fault in logging.c:lou_logPrint() (CVE-2018-11577)
  
• liblouis: Stack-based buffer overflow in compileTranslationTable.c (CVE-2018-12085)
  

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 1585905 - CVE-2018-11577 liblouis: Segmentation fault in logging.c:lou_logPrint()
• BZ - 1588631 - CVE-2018-11684 liblouis: Stack-based buffer overflow in function includeFile in compileTranslationTable.c
• BZ - 1588636 - CVE-2018-11685 liblouis: Stack-based buffer overflow in function compileHyphenation in compileTranslationTable.c
• BZ - 1589940 - CVE-2018-12085 liblouis: Stack-based buffer overflow in compileTranslationTable.c

CVEs

• CVE-2018-11577
• CVE-2018-11684
• CVE-2018-11685
• CVE-2018-12085

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index