Bug 1480330 (CVE-2017-1000115)

Summary: CVE-2017-1000115 Mercurial: pathaudit: path traversal via symlink
Product: [Other] Security Response Reporter: Cedric Buissart 🐶 <cbuissar>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: mads, ndbecker2, pstodulk, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: mercurial 4.3, mercurial 4.2.3 Doc Type: If docs needed, set a value
Doc Text:
A vulnerability was found in the way Mercurial handles path auditing and caches the results. An attacker could abuse a repository with a series of commits mixing symlinks and regular files/directories to trick Mercurial into writing outside of a given repository.
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-08-18 08:17:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1479968, 1479969, 1480454    
Bug Blocks: 1480327    

Description Cedric Buissart 🐶 2017-08-10 17:41:27 UTC
The symlink auditor is sometimes cached too long, and can be confused into allowing write access to outside the repo.

Comment 3 Cedric Buissart 🐶 2017-08-10 19:37:02 UTC
External References:

https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.3_.2F_4.3.1_.282017-08-10.29

Comment 4 Cedric Buissart 🐶 2017-08-11 07:36:31 UTC
Acknowledgments:

Name: the Mercurial Security Team

Comment 5 Cedric Buissart 🐶 2017-08-11 07:37:04 UTC
Created mercurial tracking bugs for this issue:

Affects: fedora-all [bug 1480454]

Comment 7 errata-xmlrpc 2017-08-17 11:07:06 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2489 https://access.redhat.com/errata/RHSA-2017:2489