Matrix libolm up to 3.2.2 olm_pk_decrypt stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Matrix libolm up to 3.2.2 and classified as critical. This affects the function olm_pk_decrypt. The manipulation results in stack-based overflow. This vulnerability is cataloged as CVE-2021-34813. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Matrix libolm up to 3.2.2. Affected is the function olm_pk_decrypt. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on availability.

The weakness was shared 06/17/2021. The advisory is available at matrix.org. This vulnerability is traded as CVE-2021-34813. Technical details are known, but there is no available exploit.

Upgrading to version 3.2.3 eliminates this vulnerability. The upgrade is hosted for download at gitlab.matrix.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at gitlab.matrix.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libolm 3.2.3
Patch: gitlab.matrix.org

Timelineinfo

06/16/2021 🔍
06/17/2021 +1 days 🔍
06/17/2021 +0 days 🔍
06/21/2021 +4 days 🔍

Sourcesinfo

Advisory: matrix.org
Status: Confirmed

CVE: CVE-2021-34813 (🔍)
GCVE (CVE): GCVE-0-2021-34813
GCVE (VulDB): GCVE-100-177174

Entryinfo

Created: 06/17/2021 09:58
Updated: 06/21/2021 09:36
Changes: 06/17/2021 09:58 (40), 06/21/2021 09:36 (5)
Complete: 🔍
Cache ID: 216::103

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