Vulnerability-Lookup

OPENSUSE-SU-2026:20473-1

Vulnerability from csaf_opensuse - Published: 2026-04-07 07:50 - Updated: 2026-09-17 17:29

Summary

Security update for osslsigncode

Severity

Critical

Notes

Title of the patch: Security update for osslsigncode

Description of the patch: This update for osslsigncode fixes the following issues: Changes in osslsigncode: - Update to 2.13 (bsc#1260680, CVE-2025-70888): * fixed integer overflows when processing APPX compressed data streams * fixed double-free vulnerabilities in APPX file processing * fixed multiple memory corruption issues in PE page hash computation - Changes from 2.12: * fixed a buffer overflow while extracting message digests - Changes from 2.11: * added keyUsage validation for signer certificate * added printing CRL details during signature verification * implemented a workaround for CRL servers returning the HTTP Content-Type header other than application/pkix-crl * fixed HTTP keep-alive handling * fixed macOS compiler and linker flags * fixed undefined BIO_get_fp() behavior with BIO_FLAGS_UPLINK_INTERNAL - update to 2.10: * added JavaScript signing * added PKCS#11 provider support (requires OpenSSL 3.0+) * added support for providers without specifying "-pkcs11module" option * (OpenSSL 3.0+, e.g., for the upcoming CNG provider) * added compatibility with the CNG engine version 1.1 or later * added the "-engineCtrl" option to control hardware and CNG engines * added the '-blobFile' option to specify a file containing the blob content * improved unauthenticated blob support (thanks to Asger Hautop Drewsen) * improved UTF-8 handling for certificate subjects and issuers * fixed support for multiple signerInfo contentType OIDs (CTL and Authenticode) * fixed tests for python-cryptography >= 43.0.0 - update to version 2.9: * added a 64 bit long pseudo-random NONCE in the TSA request * missing NID_pkcs9_signingTime is no longer an error * added support for PEM-encoded CRLs * fixed the APPX central directory sorting order * added a special "-" file name to read the passphrase from stdin * used native HTTP client with OpenSSL 3.x, removing libcurl dependency * added '-login' option to force a login to PKCS11 engines * added the "-ignore-crl" option to disable fetching and verifying CRL Distribution Points * changed error output to stderr instead of stdout * various testing framework improvements * various memory corruption fixes - update to version 2.8: * Microsoft PowerShell signing sponsored by Cisco Systems, Inc. * fixed setting unauthenticated attributes (Countersignature, Unauthenticated * Data Blob) in a nested signature * added the "-index" option to verify a specific signature or modify its unauthenticated attributes * added CAT file verification * added listing the contents of a CAT file with the "-verbose" option * added the new "extract-data" command to extract a PKCS#7 data content to be signed with "sign" and attached with "attach-signature" * added PKCS9_SEQUENCE_NUMBER authenticated attribute support * added the "-ignore-cdp" option to disable CRL Distribution Points (CDP) online verification * unsuccessful CRL retrieval and verification changed into a critical error the "-p" option modified to also use to configured proxy to connect CRL Distribution Points * added implicit allowlisting of the Microsoft Root Authority serial number 00C1008B3C3C8811D13EF663ECDF40 * added listing of certificate chain retrieved from the signature in case of verification failure

Patchnames: openSUSE-Leap-16.0-packagehub-187

CVE-2025-70888

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:osslsigncode-0:2.13-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:osslsigncode-0:2.13-bp160.1.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:osslsigncode-0:2.13-bp160.1.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:osslsigncode-0:2.13-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact critical

References

6 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1260680	self
https://www.suse.com/security/cve/CVE-2025-70888/	self
https://www.suse.com/security/cve/CVE-2025-70888	external
https://bugzilla.suse.com/1260680	external

JSON

To clipboard

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}

CVE-2025-70888 (GCVE-0-2025-70888)

Vulnerability from cvelistv5 – Published: 2026-03-25 00:00 – Updated: 2026-03-28 01:23

Summary

An issue in mtrojnar Osslsigncode affected at v2.10 and before allows a remote attacker to escalate privileges via the osslsigncode.c component

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-28 01:21 UTC

CWE

n/a
CWE-269 - Improper Privilege Management

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/ralphje/signify/issues/60
https://github.com/mtrojnar/osslsigncode/issues/475
https://github.com/mtrojnar/osslsigncode/pull/477

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.8,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
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                "options": [
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                    "Exploitation": "none"
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                  },
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                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-28T01:21:58.634740Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
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            "descriptions": [
              {
                "cweId": "CWE-269",
                "description": "CWE-269 Improper Privilege Management",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-28T01:23:35.847Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
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        "dateUpdated": "2026-03-25T19:03:38.130Z",
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        "shortName": "mitre"
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        },
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  "cveMetadata": {
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.