CVE-2017-9462

high-risk
Published 2017-06-06

In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and consequently execute arbitrary code, by using --debugger as a repository name.

Do I need to act?

!
48.7% chance of exploitation in next 30 days
EPSS score — higher than 51% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (18)

Affected Vendors

Debian Redhat Mercurial

References (16)

Third Party Advisory http://www.debian.org/security/2017/dsa-3963
Third Party Advisory http://www.securityfocus.com/bid/99123
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1576
Issue Tracking https://bugs.debian.org/861243
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
Third Party Advisory https://security.gentoo.org/glsa/201709-18
Mailing List https://www.mercurial-scm.org/repo/hg/rev/77eaf9539499
Release Notes https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.1.3_.282017-4-18.29
Third Party Advisory http://www.debian.org/security/2017/dsa-3963
Third Party Advisory http://www.securityfocus.com/bid/99123
Third Party Advisory https://access.redhat.com/errata/RHSA-2017:1576
Issue Tracking https://bugs.debian.org/861243
Mailing List https://lists.debian.org/debian-lts-announce/2018/07/msg00005.html
Third Party Advisory https://security.gentoo.org/glsa/201709-18
Mailing List https://www.mercurial-scm.org/repo/hg/rev/77eaf9539499
Release Notes https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.1.3_.282017-4-18.29
67
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 18/34 · Moderate
Exposure 19/34 · Moderate