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cveMitreCVE-2021-34813
HistoryJun 16, 2021 - 6:15 p.m.

CVE-2021-34813

2021-06-1618:15:09
CWE-787
mitre
web.nvd.nist.gov
84
cve-2021-34813
matrix libolm
buffer overflow
remote code execution
nvd
olm encrypted room key backup

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.6

Confidence

High

EPSS

0.021

Percentile

89.3%

JSON

Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.

Affected configurations

Nvd
Node
matrixolmRange<3.2.3
VendorProductVersionCPE
matrixolm*cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*

Related

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2021-12-15 00:00:00
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2023-10-20 00:00:00

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.6

Confidence

High

EPSS

0.021

Percentile

89.3%

JSON
Related for CVE-2021-34813
osv2debiancve1cvelist1openvas1nvd1ubuntucve1prion1cnvd1ubuntu1nessus1