PT-2017-2559 · Mercurial+4 · Mercurial+4

Ethan Blanton · Published 2017-06-06 · Updated 2020-02-05 · CVE-2017-9462

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Mercurial versions prior to 4.1.3

Description The issue is related to insufficient access control in Mercurial, specifically with the use of the command line parameter "hg serve --stdio". This can be exploited by a remote authenticated user to execute arbitrary code by using "--debugger" as a repository name, thereby launching the Python debugger.

Recommendations For Mercurial versions prior to 4.1.3, update to version 4.1.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the "hg serve --stdio" command to prevent potential exploitation.

Exploit

Fix

Incorrect Permission

Weakness Enumeration

CWE-732

CWE-264

Related Identifiers

ALT-PU-2018-2508

BDU:2017-01771

CESA-2017_1576

CVE-2017-9462

DLA-1005-1

DLA-1414-1

DSA-3963-1

GHSA-GHJX-3JG5-H6R2

MGASA-2017-0182

OPENSUSE-SU-2017_1572-1

PYSEC-2017-91

RHSA-2017:1576

RHSA-2017_1576

SUSE-SU-2017:1558-1

SUSE-SU-2017:1606-1

SUSE-SU-2017_1558-1

SUSE-SU-2017_1606-1

Affected Products

Alt Linux

Centos

Mercurial

Red Hat

Suse

References · 36

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/ssh/mercurial_ssh_exec.rb · Exploit
• https://bugs.debian.org/861243 · Patch
• https://osv.dev/vulnerability/MGASA-2017-0182 · Vendor Advisory
• https://security.gentoo.org/glsa/201709-18 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2017-1576.html · Vendor Advisory
• https://mercurial-scm.org/wiki/WhatsNew#Mercurial_4.1.3_.282017-4-18.29 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-1414-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-9462 · Vendor Advisory
• https://mercurial-scm.org/repo/hg/rev/77eaf9539499 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3963-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-01771 · Security Note
• https://ubuntu.com/security/CVE-2017-9462 · Vendor Advisory
• https://access.redhat.com/errata/RHSA-2017:1576 · Vendor Advisory
• http://debian.org/security/2017/dsa-3963 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-9462 · Security Note