Vulnerability identifier: #VU25002

Vulnerability risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-17563

CWE-ID: CWE-384

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform a session fixation attack.

The vulnerability exists due to a race condition when FORM authentication is used in Apache Tomcat. A remote attacker can use a narrow window to perform a session fixation attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 9.0.0 - 9.0.29, 8.5.0 - 8.5.49, 7.0.0 - 7.0.98

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External links
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00013.html
http://lists.apache.org/thread.html/8b4c1db8300117b28a0f3f743c0b9e3f964687a690cdf9662a884bbd%40%3Cannounce.tomcat.apache.org%3E
http://seclists.org/bugtraq/2019/Dec/43
http://security.netapp.com/advisory/ntap-20200107-0001/
http://www.debian.org/security/2019/dsa-4596

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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.