CVE-2021-44538
- Source
- https://cve.org/CVERecord?id=CVE-2021-44538
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-44538.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-44538
- Downstream
- Related
- Published
- 2021-12-14T14:15:09.410Z
- Modified
- 2026-02-24T11:42:16.768123Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
The olmsessiondescribe 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 olmsessiondescribe. 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
-
- https://gitlab.matrix.org/matrix-org/olm/-/tags
- https://gitlab.matrix.org/matrix-org/olm/-/tags
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
- https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdk
- https://www.debian.org/security/2022/dsa-5034
- https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdk
- https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html
Affected packages
Git
github.com/golang/go
Affected ranges
- Type
- GIT
- Repo
- https://github.com/golang/go
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
go1.*
go1.3beta1
go1.3beta2
go1.4beta1
go1.5beta1
go1.5beta2
go1.5beta3
go1.6beta1
go1.6beta2
go1.7beta1
go1.7beta2
go1.7rc1
go1.7rc2
go1.7rc3
go1.7rc4
go1.8beta1
go1.8beta2
go1.9
go1.9.1
go1.9.2
go1.9.3
go1.9.4
go1.9.5
go1.9.6
go1.9beta1
go1.9beta2
go1.9rc1
go1.9rc2
release.*
release.r56
Other
weekly
weekly.*
weekly.2009-11-06
weekly.2009-11-10
weekly.2009-11-10.1
weekly.2009-11-12
weekly.2009-11-17
weekly.2009-12-07
weekly.2009-12-09
weekly.2009-12-22
weekly.2010-01-05
weekly.2010-01-13
weekly.2010-01-27
weekly.2010-02-04
weekly.2010-02-17
weekly.2010-02-23
weekly.2010-03-04
weekly.2010-03-15
weekly.2010-03-22
weekly.2010-03-30
weekly.2010-04-13
weekly.2010-04-27
weekly.2010-05-04
weekly.2010-05-27
weekly.2010-06-09
weekly.2010-06-21
weekly.2010-07-01
weekly.2010-07-14
weekly.2010-07-29
weekly.2010-08-04
weekly.2010-08-11
weekly.2010-08-25
weekly.2010-09-06
weekly.2010-09-15
weekly.2010-09-22
weekly.2010-09-29
weekly.2010-10-13
weekly.2010-10-13.1
weekly.2010-10-20
weekly.2010-10-27
weekly.2010-11-02
weekly.2010-11-10
weekly.2010-11-23
weekly.2010-12-02
weekly.2010-12-08
weekly.2010-12-15
weekly.2010-12-15.1
weekly.2010-12-22
weekly.2011-01-06
weekly.2011-01-12
weekly.2011-01-19
weekly.2011-01-20
weekly.2011-02-01
weekly.2011-02-01.1
weekly.2011-02-15
weekly.2011-02-24
weekly.2011-03-07
weekly.2011-03-07.1
weekly.2011-03-15
weekly.2011-03-28
weekly.2011-04-04
weekly.2011-04-13
weekly.2011-04-27
weekly.2011-05-22
weekly.2011-06-02
weekly.2011-06-09
weekly.2011-06-16
weekly.2011-06-23
weekly.2011-07-07
weekly.2011-07-19
weekly.2011-07-29
weekly.2011-08-10
weekly.2011-08-17
weekly.2011-09-01
weekly.2011-09-07
weekly.2011-09-16
weekly.2011-09-21
weekly.2011-10-06
weekly.2011-10-18
weekly.2011-10-25
weekly.2011-10-26
weekly.2011-11-01
weekly.2011-11-02
weekly.2011-11-08
weekly.2011-11-09
weekly.2011-11-18
weekly.2011-12-01
weekly.2011-12-02
weekly.2011-12-06
weekly.2011-12-14
weekly.2011-12-22
weekly.2012-01-15
weekly.2012-01-20
weekly.2012-01-27
weekly.2012-02-07
weekly.2012-02-14
weekly.2012-02-22
weekly.2012-03-04
weekly.2012-03-13
weekly.2012-03-22
weekly.2012-03-27
github.com/matrix-org/matrix-js-sdk
Affected versions
v10.*
v10.0.0
v10.0.0-rc.1
v10.1.0
v10.1.0-rc.1
v11.*
v11.0.0
v11.0.0-rc.1
v11.1.0
v11.1.0-rc.1
v11.2.0
v11.2.0-rc.1
v12.*
v12.0.0
v12.0.0-rc.1
v12.0.1
v12.0.1-rc.1
v12.1.0
v12.1.0-rc.1
v12.2.0
v12.2.0-rc.1
v12.3.0
v12.3.0-rc.1
v12.3.0-rc.2
v12.3.1
v12.4.0
v12.4.0-rc.1
v12.4.1
v12.5.0
v12.5.0-rc.1
v13.*
v13.0.0
v13.0.0-rc.1
v14.*
v14.0.0
v14.0.0-rc.1
v14.0.0-rc.2
v14.0.1
v15.*
v15.0.0
v15.0.0-rc.1
v15.1.0
v15.1.0-rc.1
v15.1.1
v15.1.1-rc.1
v15.2.0
v15.2.0-rc.1
v2.*
v2.4.2
v2.4.3
v2.4.3-rc.1
v2.4.4
v2.4.4-rc.1
v2.4.5
v2.4.6
v2.4.6-rc.1
v3.*
v3.0.0
v3.0.0-rc.1
v4.*
v4.0.0
v4.0.0-rc.1
v5.*
v5.0.0
v5.0.0-rc.1
v5.0.1
v5.1.0
v5.1.0-rc.1
v5.1.1
v5.1.1-rc.1
v5.2.0
v5.2.0-rc.1
v5.3.0-rc.1
v5.3.1-rc.1
v5.3.1-rc.2
v5.3.1-rc.3
v5.3.1-rc.4
v6.*
v6.0.0
v6.0.0-rc.1
v6.0.0-rc.2
v6.1.0
v6.1.0-rc.1
v6.2.0
v6.2.0-rc.1
v6.2.1
v6.2.2
v7.*
v7.0.0
v7.0.0-rc.1
v7.1.0
v7.1.0-rc.1
v8.*
v8.0.0
v8.0.1
v8.0.1-rc.1
v8.1.0
v8.1.0-rc.1
v8.2.0
v8.2.0-rc.1
v8.3.0
v8.3.0-rc.1
v8.4.0
v8.4.0-rc.1
v8.4.1
v8.5.0
v8.5.0-rc.1
v9.*
v9.0.0
v9.0.0-rc.1
v9.0.1
v9.1.0
v9.1.0-rc.1
v9.10.0
v9.10.0-rc.1
v9.11.0
v9.11.0-rc.1
v9.2.0
v9.2.0-rc.1
v9.3.0
v9.3.0-rc.1
v9.4.0
v9.4.0-rc.1
v9.4.0-rc.2
v9.4.1
v9.5.0
v9.5.0-rc.1
v9.5.1
v9.6.0
v9.6.0-rc.1
v9.7.0
v9.7.0-rc.1
v9.8.0
v9.8.0-rc.1
v9.9.0
v9.9.0-rc.1