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Ubuntu 18.04 ESM USN-6076-1 Critical: Matrix-Synapse Session Hijack

ubuntu
Calendar Grey May 16, 2023
Dist Ubuntu Esm H88
Multiple security flaws were resolved in Synapse for Ubuntu 18.04 ESM, targeting issues related to denial of service and session takeover.
Several security issues were fixed in Synapse.

Summary

Several security issues were fixed in Synapse.

Software Description:

- matrix-synapse: Synapse: Matrix homeserver written in Python/Twisted.

Details:

It was discovered that Synapse incorrectly handled certain inputs. If a

user or an automated system were tricked into opening a specially crafted

input file, a remote attacker could possibly use this issue to cause a

denial of service. (CVE-2019-18835, CVE-2018-12291, CVE-2018-10657)

It was discovered that Synapse incorrectly handled certain inputs. If a

user or an automated system were tricked into opening a specially crafted

input file, a remote attacker could possibly use this issue to hijack the

session. (CVE-2019-11842, CVE-2018-12423)

It was discovered that Synapse incorrectly handled certain inputs. If a

user or an automated system were tricked into opening a specially crafted

input file, a remote attacker could possibly use this issue to perform

spoofing or user impersonation. (CVE-2019-5885, CVE-2018...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service session hijack matrix-synapse Ubuntu 18.04

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 ESM:
   matrix-synapse                  0.24.0+dfsg-1ubuntu0.1~esm1

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6076-1

CVE-2018-10657, CVE-2018-12291, CVE-2018-12423, CVE-2018-16515,

CVE-2019-11842, CVE-2019-18835, CVE-2019-5885

Severity
critical
Lowest
Low
Medium
High
Critical

May 16, 2023

Topics%20covered

Topics Covered

security advisory denial of service session hijack matrix-synapse Ubuntu 18.04

Package Information

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