CVE-2017-1000115
HighSummary
Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can allow malicious repositories to modify files outside the repository.
Risk Assessment
Organizations may be exposed to unauthorized changes to files, potentially leading to data loss or the introduction of malware.
Recommendation
It is recommended to upgrade Mercurial to version 4.3 or later to mitigate this vulnerability.
Other vulnerabilities in Mercurial
See all- CVE-2017-9462High
In Mercurial before version 4.1.3, the command 'hg serve --stdio' allows remote authenticated users to launch the Python debugger, consequently executing arbitrary code by using --debugger as a repository name.
- CVE-2016-3630High
The binary delta decoder in Mercurial before version 3.7.3 allows remote attackers to execute arbitrary code via (1) clone, (2) push, or (3) pull commands, related to (a) a list sizing rounding error and (b) short records.
- CVE-2016-3069High
Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a crafted name when converting a Git repository.
- CVE-2016-3068High
Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a crafted git ext:: URL when cloning a subrepository.
- CVE-2014-9462High
The _validaterepo function in sshpeer in Mercurial before version 3.2.4 allows remote attackers to execute arbitrary commands via a crafted repository name in a clone command.
- CVE-2017-17458Critical
In Mercurial before version 4.4.1, a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script. Typical use of Mercurial prevents the construction of such repositories, but they can be created programmatically.
- CVE-2017-1000116Critical
Mercurial prior to 4.3 did not adequately sanitize hostnames passed to ssh, leading to possible shell-injection attacks.
Original NVD description (English source)
Mercurial prior to version 4.3 is vulnerable to a missing symlink check that can malicious repositories to modify files outside the repository