Loop with Unreachable Exit Condition ('Infinite Loop') Affecting quagga package, versions <1.1.1-3ubuntu0.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1710-QUAGGA-319651
- published19 Feb 2018
- disclosed19 Feb 2018
Introduced: 19 Feb 2018
CVE-2018-5381 (opens in a new tab)How to fix?
Upgrade Ubuntu:17.10 quagga to version 1.1.1-3ubuntu0.2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream quagga package and not the quagga package as distributed by Ubuntu.
See How to fix? for Ubuntu:17.10 relevant fixed versions and status.
The Quagga BGP daemon (bgpd) prior to version 1.2.3 has a bug in its parsing of "Capabilities" in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function. The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI, causing a denial of service.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-5381
- http://www.kb.cert.org/vuls/id/940439
- http://savannah.nongnu.org/forum/forum.php?forum_id=9095
- https://cert-portal.siemens.com/productcert/pdf/ssa-451142.pdf
- https://gogs.quagga.net/Quagga/quagga/src/master/doc/security/Quagga-2018-1975.txt
- https://www.debian.org/security/2018/dsa-4115
- https://lists.debian.org/debian-lts-announce/2018/02/msg00021.html
- https://security-tracker.debian.org/tracker/CVE-2018-5381
- https://security.gentoo.org/glsa/201804-17
- https://usn.ubuntu.com/3573-1/