VDB-124812 · CVE-2018-17985 · USN-4326-1

GNU libiberty cp-demangle.c cplus_demangle_type resource consumption

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.
4.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in GNU libiberty. The affected element is the function cplus_demangle_type of the file cp-demangle.c. The manipulation results in resource consumption. This vulnerability is reported as CVE-2018-17985. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in GNU libiberty (affected version not known). Affected is the function cplus_demangle_type of the file cp-demangle.c. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in cp-demangle.c in GNU libiberty, as distributed in GNU Binutils 2.31. There is a stack consumption problem caused by the cplus_demangle_type function making recursive calls to itself in certain scenarios involving many 'P' characters.

The bug was discovered 10/03/2018. The weakness was disclosed 10/04/2018 (Website). The advisory is shared for download at gcc.gnu.org. This vulnerability is traded as CVE-2018-17985 since 10/04/2018. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

libiberty

License

open-source

Website

Vendor: https://www.gnu.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/03/2018 🔍
10/04/2018 +0 days 🔍
10/04/2018 +0 days 🔍
10/04/2018 +0 days 🔍
10/05/2018 +1 days 🔍
05/22/2023 +1690 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: USN-4326-1
Status: Not defined

CVE: CVE-2018-17985 (🔍)
GCVE (CVE): GCVE-0-2018-17985
GCVE (VulDB): GCVE-100-124812

Entryinfo

Created: 10/05/2018 07:16
Updated: 05/22/2023 10:18
Changes: 10/05/2018 07:16 (57), 03/29/2020 20:29 (1), 05/22/2023 10:18 (3)
Complete: 🔍
Cache ID: 216::103