Headline
CVE-2023-48237: overflow in shift_line
Vim is an open source command line text editor. In affected versions when shifting lines in operator pending mode and using a very large value, it may be possible to overflow the size of integer. Impact is low, user interaction is required and a crash may not even happen in all situations. This issue has been addressed in commit 6bf131888 which has been included in version 9.0.2112. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected versions
<v9.0.2112
Patched versions
v9.0.2112
Description
overflow in shift_line
Date: 16.11.2023
Severity: Low
When shifting lines in operator pending mode and using a very large
value, we may overflow the size of integer. Fix this by using a long long
variable, testing if the result would be larger than INT_MAX and if so,
indent by INT_MAX value.
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 9.0.2112.
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.