Bug 1664020 (CVE-2018-20349)

Summary: CVE-2018-20349 igraph: NULL pointer dereference in igraph_i_strdiff function resulting in a denial of service
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: brian, ndbecker2, pingou
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Clone Of: Environment:
Last Closed: 2019-06-10 10:44:52 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 1664021, 1664022    
Bug Blocks:    

Description Andrej Nemec 2019-01-07 14:30:50 UTC
The igraph_i_strdiff function in igraph_trie.c in igraph through 0.7.1 has an NULL pointer dereference that allows attackers to cause a denial of service (application crash) via a crafted object.

Upstream issue:


Comment 1 Andrej Nemec 2019-01-07 14:31:02 UTC
Created igraph tracking bugs for this issue:

Affects: epel-all [bug 1664022]
Affects: fedora-all [bug 1664021]

Comment 2 Product Security DevOps Team 2019-06-10 10:44:52 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.