VDB-128508 · CVE-2018-20541 · GCVE-0-2018-20541

LIBXSMM 1.10 generator_spgemm_csc_reader.c libxsmm_sparse_csc_reader memory corruption

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.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in LIBXSMM 1.10. The affected element is the function libxsmm_sparse_csc_reader of the file generator_spgemm_csc_reader.c. The manipulation results in memory corruption. This vulnerability was named CVE-2018-20541. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in LIBXSMM 1.10. It has been classified as critical. Affected is the function libxsmm_sparse_csc_reader of the file generator_spgemm_csc_reader.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

There is a heap-based buffer overflow in libxsmm_sparse_csc_reader at generator_spgemm_csc_reader.c in LIBXSMM 1.10, a different vulnerability than CVE-2018-20542 (which is in a different part of the source code and is seen at different addresses).

The bug was discovered 11/22/2018. The weakness was presented 12/28/2018 (Website). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2018-20541 since 12/27/2018. 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 36 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.

See VDB-128510 and VDB-128509 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

LIBXSMM

Version

1.10

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/22/2018 🔍
12/27/2018 +35 days 🔍
12/28/2018 +1 days 🔍
12/28/2018 +0 days 🔍
12/29/2018 +1 days 🔍
06/22/2023 +1636 days 🔍

Sourcesinfo

Advisory: 151481489192e6d1997f8bde52c5c425ea41741d
Status: Not defined

CVE: CVE-2018-20541 (🔍)
GCVE (CVE): GCVE-0-2018-20541
GCVE (VulDB): GCVE-100-128508
See also: 🔍

Entryinfo

Created: 12/29/2018 17:36
Updated: 06/22/2023 11:46
Changes: 12/29/2018 17:36 (57), 04/24/2020 21:37 (1), 06/22/2023 11:46 (4)
Complete: 🔍
Cache ID: 216::103