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Ubuntu 16.04 ESM : libwebp vulnerability (USN-6078-2)

high Nessus Plugin ID 178444

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-6078-2 advisory.

 - There exists a use after free/double free in libwebp. An attacker can use the ApplyFiltersAndEncode() function and loop through to free best.bw and assign best = trial pointer. The second loop will then return 0 because of an Out of memory error in VP8 encoder, the pointer is still assigned to trial and the AddressSanitizer will attempt a double free. (CVE-2023-1999)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-6078-2

Plugin Details

Severity: High

ID: 178444

File Name: ubuntu_USN-6078-2.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/18/2023

Updated: 9/26/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2023-1999

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:libwebp-dev, p-cpe:/a:canonical:ubuntu_linux:libwebp5, p-cpe:/a:canonical:ubuntu_linux:libwebpdemux1, p-cpe:/a:canonical:ubuntu_linux:libwebpmux1, p-cpe:/a:canonical:ubuntu_linux:webp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/18/2023

Vulnerability Publication Date: 4/11/2023

Reference Information

CVE: CVE-2023-1999

USN: 6078-2