PT-2021-18208 · Sydent · Sydent

Richvdh · Published 2021-04-15 · Updated 2022-08-03 · CVE-2021-29432

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions: Sydent versions prior to 4469d1d

Description: A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address, potentially constructing plausible phishing emails.

Recommendations: For versions prior to 4469d1d, update to a version that includes the fixes, such as 4469d1d, 6b405a8, or 65a6e91. Note that if the default email templates have been locally modified, they must also be updated to prevent exploitation. As a temporary workaround, consider restricting access to the email functionality in Sydent until the update can be applied.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-29432

GHSA-MH74-4M5G-FCJX

PYSEC-2021-23

Affected Products

Sydent

References · 10

• https://github.com/matrix-org/sydent/commit/4469d1d42b2b1612b70638224c07e19623039c42 · Patch
• https://github.com/matrix-org/sydent/security/advisories/GHSA-mh74-4m5g-fcjx · Patch
• https://osv.dev/vulnerability/GHSA-mh74-4m5g-fcjx · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-23 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29432 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29432 · Security Note
• https://github.com/matrix-org/sydent/releases/tag/v2.3.0 · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/matrix-sydent/PYSEC-2021-23.yaml · Note
• https://pypi.org/project/matrix-sydent · Note
• https://t.me/cvenotify/34204 · Telegram Post