Headline
CVE-2023-48236: overflow in get_number
Vim is an open source command line text editor. When using the z= command, the user may overflow the count with values larger
than MAX_INT. Impact is low, user interaction is required and a crash may not even happen in all situations. This vulnerability has been addressed in commit 73b2d379 which has been included in release version 9.0.2111. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected versions
<v9.0.2111
Patched versions
v9.0.2111
Description
overflow in get_number
Date: 16.11.2023
Severity: Low
When using the z= command, we may overflow the count with values larger
than MAX_INT. So verify that we do not overflow and in case when an
overflow is detected, simply return 0
Impact is low, user interaction is required and a crash may not even happen.
The Vim project would like to thank Fabian Toepfer for reporting this issue
which is now fixed in Vim patch 9.0.2111
Related news
Ubuntu Security Notice 6557-1 - It was discovered that Vim could be made to dereference invalid memory. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. It was discovered that Vim could be made to recurse infinitely. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.