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EulerOS 2.0 SP11 : vim (EulerOS-SA-2024-2989)
medium Nessus Plugin ID 212631
Synopsis
The remote EulerOS host is missing multiple security updates.Description
According to the versions of the vim packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :The UNIX editor Vim prior to version 9.1.0678 has a use-after-free error in argument list handling. When adding a new file to the argument list, this triggers `Buf*` autocommands. If in such an autocommand the buffer that was just opened is closed (including the window where it is shown), this causes the window structure to be freed which contains a reference to the argument list that we are actually modifying. Once the autocommands are completed, the references to the window and argument list are no longer valid and as such cause an use-after-free. Impact is low since the user must either intentionally add some unusual autocommands that wipe a buffer during creation (either manually or by sourcing a malicious plugin), but it will crash Vim. The issue has been fixed as of Vim patch v9.1.0678.(CVE-2024-43374)
Vim is an improved version of the unix vi text editor. When flushing the typeahead buffer, Vim moves the current position in the typeahead buffer but does not check whether there is enough space left in the buffer to handle the next characters. So this may lead to the tb_off position within the typebuf variable to point outside of the valid buffer size, which can then later lead to a heap-buffer overflow in e.g.
ins_typebuf(). Therefore, when flushing the typeahead buffer, check if there is enough space left before advancing the off position. If not, fall back to flush current typebuf contents. It's not quite clear yet, what can lead to this situation. It seems to happen when error messages occur (which will cause Vim to flush the typeahead buffer) in comnination with several long mappgins and so it may eventually move the off position out of a valid buffer size. Impact is low since it is not easily reproducible and requires to have several mappings active and run into some error condition. But when this happens, this will cause a crash. The issue has been fixed as of Vim patch v9.1.0697. Users are advised to upgrade. There are no known workarounds for this issue.(CVE-2024-43802)
Vim is an open source, command line text editor. A use-after-free was found in Vim 9.1.0764. When closing a buffer (visible in a window) a BufWinLeave auto command can cause an use-after-free if this auto command happens to re-open the same buffer in a new split window. Impact is low since the user must have intentionally set up such a strange auto command and run some buffer unload commands. However this may lead to a crash. This issue has been addressed in version 9.1.0764 and all users are advised to upgrade.
There are no known workarounds for this vulnerability.(CVE-2024-47814)
Tenable has extracted the preceding description block directly from the EulerOS vim security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected vim packages.See Also
Plugin Details
Severity: Medium
ID: 212631
File Name: EulerOS_SA-2024-2989.nasl
Version: 1.1
Type: local
Family: Huawei Local Security Checks
Published: 12/12/2024
Updated: 12/12/2024
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.4
CVSS v2
Risk Factor: Low
Base Score: 3.7
Temporal Score: 2.7
Vector: CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2024-43802
CVSS v3
Risk Factor: Medium
Base Score: 4.5
Temporal Score: 3.9
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:huawei:euleros:vim-minimal, p-cpe:/a:huawei:euleros:vim-common, p-cpe:/a:huawei:euleros:vim-filesystem, cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:vim-enhanced
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp
Excluded KB Items: Host/EulerOS/uvp_version
Exploit Ease: No known exploits are available
Patch Publication Date: 12/11/2024
Vulnerability Publication Date: 8/15/2024