libcaca 0.99.beta19 common-image.c load_image integer overflow

CVSS Meta Temp Score
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7.4$0-$5k0.00

A vulnerability has been found in libcaca 0.99.beta19 and classified as critical. Affected by this vulnerability is the function load_image of the file common-image.c. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 1bpp data.

The bug was discovered 12/28/2018. The weakness was published 12/28/2018 (Website). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2018-20548 since 12/27/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 121212 (Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : libcaca vulnerabilities (USN-3860-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197344 (Ubuntu Security Notification for Libcaca Vulnerabilities (USN-3860-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (121212). Similar entries are available at 128416, 128511, 128512 and 128513.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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NVD Base Score: 8.8
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CVSSv2info

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Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 121212
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : libcaca vulnerabilities (USN-3860-1)
Nessus File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

12/27/2018 🔍
12/28/2018 +1 days 🔍
12/28/2018 +0 days 🔍
12/28/2018 +0 days 🔍
12/29/2018 +1 days 🔍
01/15/2019 +17 days 🔍
01/16/2019 +1 days 🔍
06/22/2023 +1618 days 🔍

Sourcesinfo

Advisory: USN-3860-1
Status: Confirmed

CVE: CVE-2018-20548 (🔍)
See also: 🔍

Entryinfo

Created: 12/29/2018 17:39
Updated: 06/22/2023 12:46
Changes: 12/29/2018 17:39 (70), 04/25/2020 07:15 (3), 06/22/2023 12:46 (4)
Complete: 🔍

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