Medium severity · published Apr 22, 2019
CVE-2019-3902
A flaw was found in Mercurial before 4.9
5.9
CVSS
1.4%
EPSS
No
On KEV
Description
A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0 · source: NVD
ME
Mercurial · Mercurial
before 4.9 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-3902
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-3902
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3902
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00024.html
lists.debian.org
https://lists.debian.org/debian-lts-announce/2020/07/msg00032.html
usn.ubuntu.com
https://usn.ubuntu.com/4086-1/
Third Party Advisory
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29
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