CVE-2021-34813
Vulnerability from cvelistv5
Published
2021-06-16 17:11
Modified
2024-08-04 00:26
Severity ?
EPSS score ?
Summary
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.
References
▼ | URL | Tags | |
---|---|---|---|
cve@mitre.org | https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b | Patch, Vendor Advisory | |
cve@mitre.org | https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3 | Release Notes, Vendor Advisory | |
cve@mitre.org | https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm | Exploit, Patch, Vendor Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b | Patch, Vendor Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3 | Release Notes, Vendor Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm | Exploit, Patch, Vendor Advisory |
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Remote code execution might be possible for some nonstandard build configurations.", }, ], }, problemtype: { problemtype_data: [ { description: [ { lang: "eng", value: "n/a", }, ], }, ], }, references: { reference_data: [ { name: "https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm", refsource: "MISC", url: "https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm", }, { name: "https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3", refsource: "MISC", url: "https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3", }, { name: "https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b", refsource: "MISC", url: "https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b", }, ], }, }, }, }, cveMetadata: { assignerOrgId: "8254265b-2729-46b6-b9e3-3dfca2d5bfca", assignerShortName: "mitre", cveId: "CVE-2021-34813", datePublished: "2021-06-16T17:11:53", dateReserved: "2021-06-16T00:00:00", dateUpdated: "2024-08-04T00:26:54.020Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2021-34813\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2021-06-16T18:15:09.730\",\"lastModified\":\"2024-11-21T06:11:15.373\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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. 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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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