openSUSE 16 Security Update : perl-MIME-tools (openSUSE-SU-2026:22226-1)

high Nessus Plugin ID 376246

Synopsis

The remote openSUSE host is missing one or more security updates.

Description

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:22226-1 advisory.

Changes in perl-MIME-tools:

- updated to 5.522.0 (5.522)
* 5.522
* VERSION 5.522 RELEASED
* Many security issues were addressed (see the following ten CVEs) Issues were brought to my attention, and patches supplied, by the CPANSec security group.
* parse_params: flag a parameter list that could not be parsed Detect additional ambiguous parse situations when parameter names contain illegal characters. Fixes:
CVE-2026-116264 invalid parameter hides boundary/filename. bsc#1288723
* parse_params: check the boundary after RFC 2231 reassembly Another ambiguous-parse case was missed (trailing space after boundary was not detected for RFC-2231-encoded boundaries.) Fixes:
CVE-2026-116265 RFC 2231 boundary skips ambiguity checks. bsc#1288722
* parse_params: Stricter checking for encoded boundaries; earlier versions would miss some cases. Fixes:
CVE-2026-116266 boundary changed by decoding not flagged. bsc#1288721
* Cap the indentation levels in the Results: structure. Otherwise, specially-crafted messages could consume large amounts of memory.
Fixes: CVE-2026-116267 indent stored per message per level bsc#1288720
* parse_params: stop a comment match at the next parenthesis.
Otherwise, specially-crafted messages could cause the regex back-tracker to consume large amounts of CPU time. Note that MIME::Parser does not correctly parse ((nested comments)) and has never done so. Fixes:
CVE-2026-116268 unclosed ( comments backtrack CPU exhaustion. bsc#1288719
* parse_params: re-encode filename* values without charset tricks Specially-crafted messages could trick recommended_filename() into returning an empty string instead of a plausible filename.
Fixes: CVE-2026-116269 RFC 2231 language tag empties filename. bsc#1288718
* decode_mimewords: do not copy the input into each error. Otherwise, specially-crafted messages could consume large amounts of memory.
Fixes: CVE-2026-116270 each bad =? copies the input into $@. bsc#1288717
* FileUnder: do not reuse an existing generated directory. Otherwise, attackers might be able to use symbolic links to get files created in unexpected locations. Fixes:
CVE-2026-116271 FileUnder reuses a pre-created directory. bsc#1288716
* parse_params: flag comments other readers do not skip Specially-crafted messages could create ambiguous messages without setting the ambiguous_parse flag. Fixes:
CVE-2026-116272 comment hides a duplicate boundary. bsc#1288715
* Call whine() rather than error() if max_parts or max_depth is exceeded during a parse. This lets us return undef rather than throwing an exception if ignore_errors() is set to 0.
* Change to defaults: max_parts is now set to 1000 and max_depth to 64 rather than being unlimited. This should not affect most real-world uses of MIME::tools, but you may need to increase these values or set them to -1 (unlimited) if you run into trouble.
***** NOTE INCOMPATIBILITY ***** Fixes: CVE-2026-116273 max_parts and max_depth unlimited. bsc#1288714
* Do not signal an ambiguous parse if we have filename= or name=
* Update author names in META.yml
* Add git repo to META.yml
* 5.520
* VERSION 5.520 RELEASED
* MIME::Parser used O(N^2) CPU time and memory parsing a MIME message nested N levels deep. A smallish specially-crafted message could DOS the computer by making it consume enormous amounts of memory and CPU time. The parser was modified to use O(N) time and memory in this case. Additionally, a new MIME::Parser::max_depth() function was added to limit the nesting depth before declaring a parse failure. Problem was reported to me by Zhaoyang Li and Xiang Li from AOSP Lab at Nankai University.
* MIME::Parser would ignore multiple blank lines in a message preamble when parsing it; this could break DKIM. Problem pointed out and fix suggested by Tim Henderson.
* If a MIME boundary includes trailing whitespace, we mark the parse as ambiguous. Problem noted and patch submitted by Christian Herdtweck
* 5.519
* VERSION 5.519 RELEASED
* Some (buggy) software creates base64-encoded parts as a concatenation of multiple base64-encoded streams, and some client software decodes each stream separately and concatenates the results. Duplicate this behavior in MIME::tools to prevent it from being used as a mechanism to sneak dangerous content past a security scanner. Patch courtesy of Giorgio Premi <[email protected]>.

- updated to 5.518.0 (5.518)
* 5.518
* VERSION 5.518 RELEASED
* Add tests for encoded boundary=XXX parameters and set the ambiguous-parse flag if any are found. Patch courtesy of Dominik Csapak <[email protected]> MIME::tools chooses to decode encoded boundary parameters.
MUA behaviors differ; Claws-Mail decodes them while Thunderbird does not.
* Don't ignore invalid whitespace after boundary=XXX parameter.
Patch courtesy of Dominik Csapak <[email protected]>
* Ignore comments between tokens. A header parameter can be written foo(comment)=bar and it's the same as foo=bar.
Patch courtesy of Dominik Csapak <[email protected]>

- updated to 5.517.0 (5.517)
* 5.517
* VERSION 5.517 RELEASED
* Add a missing test message file that was causing tests to fail.
* 5.516
* VERSION 5.516 RELEASED
* Handle MIME parameters of the form param= better (ie, a parameter with no value at all.) It's treated the same as param= rather than aborting the parse.
* Diagnose additional types of malformed MIME as ambiguous.
Specifically, an empty boundary parameters like boundary= or boundary= is treated as ambiguous. Thanks to Stoiko Ivanov <[email protected]> for pointing out this missing case.

Tenable has extracted the preceding description block directly from the SUSE 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 perl-MIME-tools package.

Plugin Details

Severity: High

ID: 376246

File Name: openSUSE-2026-22226-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 11/5/2026

Updated: 11/5/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 92.82

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-116271

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:opensuse:16.0, p-cpe:/a:novell:opensuse:perl-mime-tools

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/3/2026

Vulnerability Publication Date: 10/28/2026

Reference Information

CVE: CVE-2026-116264, CVE-2026-116265, CVE-2026-116266, CVE-2026-116267, CVE-2026-116268, CVE-2026-116269, CVE-2026-116270, CVE-2026-116271, CVE-2026-116272, CVE-2026-116273

Detections

Analytics