CVE-2021-44538
Vulnerability from cvelistv5
Published
2021-12-14 13:26
Modified
2024-08-04 04:25
Severity ?
Summary
The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.
References
cve@mitre.orghttps://gitlab.matrix.org/matrix-org/olm/-/tagsProduct, Third Party Advisory
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdkPatch, Vendor Advisory
cve@mitre.orghttps://www.debian.org/security/2022/dsa-5034Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.matrix.org/matrix-org/olm/-/tagsProduct, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/01/msg00001.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdkPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5034Third Party Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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