xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the TSSA-2025:0133 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2023-40359:
    xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters     (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm     installations that are configured at compile time to use a certain experimental feature.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters     (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm     installations that are configured at compile time to use a certain experimental feature. (CVE-2023-40359)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:4438-1 advisory.

  - xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters     (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm     installations that are configured at compile time to use a certain experimental feature. (CVE-2023-40359)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
276089	TencentOS Server 4: xterm (TSSA-2025:0133)	Nessus	Tencent Local Security Checks	critical
227030	Linux Distros Unpatched Vulnerability : CVE-2023-40359	Nessus	Misc.	critical
185727	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : xterm (SUSE-SU-2023:4438-1)	Nessus	SuSE Local Security Checks	critical

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CVE-2023-40359

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