Mailing List Archive

[ GLSA 202105-07 ] Telegram: Security bypass
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Gentoo Linux Security Advisory GLSA 202105-07
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https://security.gentoo.org/
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Severity: Low
Title: Telegram: Security bypass
Date: May 26, 2021
Bugs: #771684
ID: 202105-07

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Synopsis
========

An insufficient session expiration has been reported in Telegram.

Background
==========

Telegram is a cloud-based mobile and desktop messaging app with a focus
on security and speed.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-im/telegram-desktop < 2.4.11 >= 2.4.11
2 net-im/telegram-desktop-bin
< 2.4.11 >= 2.4.11
-------------------------------------------------------------------
2 affected packages

Description
===========

It was discovered that Telegram failed to invalidate a recently active
session.

Impact
======

Please review the referenced CVE identifiers for details.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Telegram users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/telegram-desktop-2.4.11"

All Telegram binary users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot -v ">=net-im/telegram-desktop-bin-2.4.11"

References
==========

[ 1 ] CVE-2021-27351
https://nvd.nist.gov/vuln/detail/CVE-2021-27351

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202105-07

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2021 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5