elfutils 0.177 libcpu out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in elfutils 0.177 and classified as critical. This affects an unknown part of the component libcpu. Performing a manipulation results in out-of-bounds write. This vulnerability was named CVE-2020-21047. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in elfutils 0.177. It has been classified as critical. This affects an unknown part of the component libcpu. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

The weakness was presented 08/23/2023. It is possible to read the advisory at sourceware.org. This vulnerability is uniquely identified as CVE-2020-21047 since 08/13/2020. The technical details are unknown and an exploit is not publicly available.

Applying the patch 99dc63b10b3878616b85df2dfd2e4e7103e414b8 is able to eliminate this problem. The bugfix is ready for download at sourceware.org.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 99dc63b10b3878616b85df2dfd2e4e7103e414b8

Timelineinfo

08/13/2020 🔍
08/23/2023 +1105 days 🔍
08/23/2023 +0 days 🔍
09/14/2023 +22 days 🔍

Sourcesinfo

Advisory: sourceware.org
Status: Confirmed

CVE: CVE-2020-21047 (🔍)
GCVE (CVE): GCVE-0-2020-21047
GCVE (VulDB): GCVE-100-237723

Entryinfo

Created: 08/23/2023 08:03
Updated: 09/14/2023 15:27
Changes: 08/23/2023 08:03 (40), 09/14/2023 15:27 (10)
Complete: 🔍
Cache ID: 216::103

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