Vulnerability identifier: #VU67275

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-25074

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
frr
Other software / Other software solutions

Vendor: frrouting.org

Description
The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when processing IS-IS HELLO packets. A remote attacker can send specially crafted packets to the IS-IS daemon, trigger memory leak and perform denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

frr: 2.0 - 8.3

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External links
http://github.com/FRRouting/frr/commit/49efc80d342d8e8373c8af040580bd7940808730
http://bugzilla.suse.com/show_bug.cgi?id=1202022

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.