Ubuntu 16.04 LTS : Tomcat vulnerabilities (USN-4448-1)

Medium Nessus Plugin ID 139368

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VPR Score: 8.4


The remote Ubuntu host is missing one or more security-related patches.


It was discovered that Tomcat incorrectly validated the payload length in a WebSocket frame. A remote attacker could possibly use this issue to cause Tomcat to hang, resulting in a denial of service.
(CVE-2020-13935) It was discovered that Tomcat incorrectly handled HTTP header parsing. In certain environments where Tomcat is located behind a reverse proxy, a remote attacker could possibly use this issue to perform HTTP Reqest Smuggling. (CVE-2020-1935) It was discovered that Tomcat incorrectly handled certain uncommon PersistenceManager with FileStore configurations. A remote attacker could possibly use this issue to execute arbitrary code.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected libtomcat8-java and / or tomcat8 packages.

See Also


Plugin Details

Severity: Medium

ID: 139368

File Name: ubuntu_USN-4448-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2020/08/06

Updated: 2020/09/17

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 8.4

CVSS Score Source: CVE-2020-1935

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 4.8

Temporal Score: 4.3

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libtomcat8-java, p-cpe:/a:canonical:ubuntu_linux:tomcat8, cpe:/o:canonical:ubuntu_linux:16.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2020/08/04

Vulnerability Publication Date: 2020/02/24

Reference Information

CVE: CVE-2020-13935, CVE-2020-1935, CVE-2020-9484

USN: 4448-1