RHSA-2019:2276 - Security Advisory

Topic

An update for mercurial is now available for Red Hat Enterprise Linux 7.

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

Mercurial is a fast, lightweight source control management system designed for efficient handling of very large distributed projects.

Security Fix(es):

• mercurial: Buffer underflow in mpatch.c:mpatch_apply() (CVE-2018-13347)
• mercurial: HTTP server permissions bypass (CVE-2018-1000132)
• mercurial: Missing check for fragment start position in mpatch.c:mpatch_apply() (CVE-2018-13346)

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 7.7 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 Server 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 1553265 - CVE-2018-1000132 mercurial: HTTP server permissions bypass
• BZ - 1594087 - CVE-2018-13347 mercurial: Buffer underflow in mpatch.c:mpatch_apply()
• BZ - 1594090 - CVE-2018-13346 mercurial: Missing check for fragment start position in mpatch.c:mpatch_apply()

CVEs

• CVE-2018-13346
• CVE-2018-13347
• CVE-2018-1000132

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index