Bug 736774 – <net-im/telegram-desktop{,-bin}-2.2.0-r1: Possible access restriction bypass for downloads (CVE-2020-17448)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Sam James 2020-08-11 18:10:47 UTC]

Description:
"Telegram Desktop through 2.1.13 allows a spoofed file type to bypass the Dangerous File Type Execution protection mechanism, as demonstrated by use of the chat window with a filename that lacks an extension."

[Comment 1 Sam James 2020-08-11 18:11:31 UTC]

* net-im/telegram-desktop needs stabilisation of 2.2.0-r1.

* net-im/telegram-desktop-bin needs a bump to 2.2.0. Please bump.

[Comment 2 Henning Schild 2020-08-18 21:39:27 UTC]

https://github.com/gentoo/gentoo/pull/17166

[Comment 3 Henning Schild 2020-08-18 21:40:46 UTC]

Did not look into the details, maybe a CVE means we need to remove the old ebuild as well. Please let me know here or in the pull request.

[Comment 4 Larry the Git Cow 2020-08-29 01:25:02 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=df8099bca70b27ea79af4a5a18cd9552d22aed95

commit df8099bca70b27ea79af4a5a18cd9552d22aed95
Author:     Henning Schild <[e-mail]>
AuthorDate: 2020-08-18 21:51:36 +0000
Commit:     Sam James <[e-mail]>
CommitDate: 2020-08-29 01:24:56 +0000

    net-im/telegram-desktop-bin: bump version to 2.2.0
    
    Bug: https://bugs.gentoo.org/736774
    Signed-off-by: Henning Schild <[e-mail]>
    Signed-off-by: Sam James <[e-mail]>

 net-im/telegram-desktop-bin/Manifest               |  3 ++
 .../telegram-desktop-bin-2.2.0.ebuild              | 58 ++++++++++++++++++++++
 2 files changed, 61 insertions(+)

[Comment 5 Larry the Git Cow 2020-10-26 08:03:38 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=4364658df0ff6f92297648a32dbd28efac732e80

commit 4364658df0ff6f92297648a32dbd28efac732e80
Author:     Georgy Yakovlev <[e-mail]>
AuthorDate: 2020-10-26 08:00:00 +0000
Commit:     Georgy Yakovlev <[e-mail]>
CommitDate: 2020-10-26 08:01:28 +0000

    net-im/telegram-desktop: bump to 2.4.4
    
    webrtc is imposibble to turn off for now, unfortunately.
    webrtc alsa and pulseaudio will be forced on for now.
    add system-rlottie useflag.
    
    for now tg_owt bundles the following:
    openh264
    abseil-cpp
    libsrtp
    libvpx
    libyuv
    pffft
    rnnoise
    usrsctp
    
    Bug: https://bugs.gentoo.org/736774
    Bug: https://bugs.gentoo.org/749288
    Closes: https://bugs.gentoo.org/739466
    Closes: https://bugs.gentoo.org/707272
    Package-Manager: Portage-3.0.8, Repoman-3.0.2
    Signed-off-by: Georgy Yakovlev <[e-mail]>

 net-im/telegram-desktop/Manifest                   |   2 +
 net-im/telegram-desktop/metadata.xml               |   2 +
 .../telegram-desktop/telegram-desktop-2.4.4.ebuild | 184 +++++++++++++++++++++
 3 files changed, 188 insertions(+)

[Comment 6 Larry the Git Cow 2020-11-02 19:14:52 UTC]

The bug has been referenced in the following commit(s):

https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=398c40130021de759ec95b211689e9318c25ece9

commit 398c40130021de759ec95b211689e9318c25ece9
Author:     Georgy Yakovlev <[e-mail]>
AuthorDate: 2020-11-02 19:13:57 +0000
Commit:     Georgy Yakovlev <[e-mail]>
CommitDate: 2020-11-02 19:14:29 +0000

    net-im/telegram-desktop: security cleanup
    
    Bug: https://bugs.gentoo.org/749288
    Bug: https://bugs.gentoo.org/736774
    Package-Manager: Portage-3.0.8, Repoman-3.0.2
    Signed-off-by: Georgy Yakovlev <[e-mail]>

 net-im/telegram-desktop/Manifest                   |   2 -
 .../telegram-desktop-2.1.13.ebuild                 | 145 -------------------
 .../telegram-desktop-2.2.0-r1.ebuild               | 153 ---------------------
 3 files changed, 300 deletions(-)

[Comment 7 GLSAMaker/CVETool Bot 2021-01-27 16:14:14 UTC]

This issue was resolved and addressed in
 GLSA 202101-34 at https://security.gentoo.org/glsa/202101-34
by GLSA coordinator Aaron Bauman (b-man).