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Debian DSA-3963-1: Mercurial Security Advisory and Fixes

debian
Calendar Grey September 4, 2017
Debian Logo
Debian's DSA-3963-1 highlights key Mercurial updates that bolster user safety and shield sensitive data from vulnerabilities. Prompt action is advised for all users.
Several issues were discovered in Mercurial, a distributed revision control system
Topics%20covered

Topics Covered

security advisory command execution security flaw jessie mercunrial

Summary

CVE-2017-9462 (fixed in stretch only)

Jonathan Claudius of Mozilla discovered that repositories served
over stdio could be tricked into granting authorized users access to
the Python debugger.

CVE-2017-1000115

Mercurial's symlink auditing was incomplete, and could be abused to
write files outside the repository.

CVE-2017-1000116

Joern Schneeweisz discovered that Mercurial did not correctly handle
maliciously constructed ssh:// URLs. This allowed an attacker to run
an arbitrary shell command.

For the oldstable distribution (jessie), these problems have been fixed
in version 3.1.2-2+deb8u4.

For the stable distribution (stretch), these problems have been fixed in
version 4.0-1+deb9u1.

We recommend that you upgrade your mercurial packages.

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/



Severity
important
Lowest
Low
Medium
High
Critical

Package: mercurial
CVE ID: CVE-2017-9462 CVE-2017-1000115 CVE-2017-1000116

Topics%20covered

Topics Covered

security advisory command execution security flaw jessie mercunrial

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