VDB-128516 · CVE-2018-20549 · USN-3860-1

libcaca 0.99.beta19 caca/file.c caca_file_read integer overflow

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in libcaca 0.99.beta19. This vulnerability affects the function caca_file_read of the file caca/file.c. Such manipulation leads to integer overflow. This vulnerability is documented as CVE-2018-20549. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in libcaca 0.99.beta19 and classified as critical. Affected by this issue is the function caca_file_read of the file caca/file.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

There is an illegal WRITE memory access at caca/file.c (function caca_file_read) in libcaca 0.99.beta19.

The bug was discovered 12/28/2018. The weakness was released 12/28/2018 (Website). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2018-20549 since 12/27/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

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). Entries connected to this vulnerability are available at VDB-128416, VDB-128511, VDB-128512 and VDB-128513. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

libcaca

Version

0.99.beta19

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

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-2018-20549 (🔍)
GCVE (CVE): GCVE-0-2018-20549
GCVE (VulDB): GCVE-100-128516
See also: 🔍

Entryinfo

Created: 12/29/2018 17:40
Updated: 06/22/2023 12:53
Changes: 12/29/2018 17:40 (70), 04/25/2020 07:29 (3), 06/22/2023 12:53 (4)
Complete: 🔍
Cache ID: 216::103