CVE-2021-21381 - log back

CVE-2021-21381 edited at 11 Mar 2021 18:01:30
Description
- flatpak since 0.9.4 has a vulnerability in the "file forwarding" feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by the app's permissions. By putting the special tokens @@ and/or @@u in the Exec field of a Flatpak app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had chosen to open a target file with their Flatpak app, which automatically makes that file available to the Flatpak app.
+ Flatpack since version 0.9.4 and before version 1.10.2 has a vulnerability in the "file forwarding" feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by the app's permissions. By putting the special tokens `@@` and/or `@@u` in the Exec field of a Flatpak app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had chosen to open a target file with their Flatpak app, which automatically makes that file available to the Flatpak app. This is fixed in version 1.10.2.
CVE-2021-21381 edited at 11 Mar 2021 17:57:19
Severity
- Unknown
+ Medium
Remote
- Unknown
+ Local
Type
- Unknown
+ Sandbox escape
Description
+ flatpak since 0.9.4 has a vulnerability in the "file forwarding" feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by the app's permissions. By putting the special tokens @@ and/or @@u in the Exec field of a Flatpak app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had chosen to open a target file with their Flatpak app, which automatically makes that file available to the Flatpak app.
References
+ https://github.com/flatpak/flatpak/security/advisories/GHSA-xgh4-387p-hqpp
+ https://github.com/flatpak/flatpak/issues/4146
+ https://github.com/flatpak/flatpak/pull/4156
+ https://github.com/flatpak/flatpak/commit/8279c5818425b6812523e3805bbe242fb6a5d961
Notes
CVE-2021-21381 created at 11 Mar 2021 17:51:36