Bug 1809300 (CVE-2019-18183)

Summary: CVE-2019-18183 pacman: allows arbitrary command injection in lib/libalpm/sync.c in apply_deltas function
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: i, zbyszek
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2020-03-03 04:32:03 UTC Type: ---
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Bug Depends On: 1809301    
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Description Guilherme de Almeida Suckevicz 2020-03-02 19:38:47 UTC
pacman before 5.2 is vulnerable to arbitrary command injection in lib/libalpm/sync.c in the apply_deltas() function. This can be exploited when unsigned databases are used. To exploit the vulnerability, the user must enable the non-default delta feature and retrieve an attacker-controlled crafted database and delta file.

Reference and upstream commit:
https://git.archlinux.org/pacman.git/commit/?id=c0e9be7973be6c81b22fde91516fb8991e7bb07b

Comment 1 Guilherme de Almeida Suckevicz 2020-03-02 19:39:03 UTC
Created pacman tracking bugs for this issue:

Affects: fedora-all [bug 1809301]

Comment 2 Product Security DevOps Team 2020-03-03 04:32:03 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.