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CVE-2017-6310 Debian CVE debrief

CVE-2017-6310 is a high-severity memory-corruption issue in tnef versions before 1.4.13. According to NVD, four type confusions in file_add_mapi_attrs() can lead to attacker-controlled invalid read and write operations. The published CVSS 3.0 vector is AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating exploitation requires user interaction and can still have serious confidentiality, integrity, and availability impact.

Vendor
Debian
Product
Unknown
CVSS
HIGH 7.8
CISA KEV
Not listed in stored evidence
Original CVE published
2017-02-24
Original CVE updated
2026-05-13
Advisory published
2017-02-24
Advisory updated
2026-05-13

Who should care

Administrators and developers who deploy or embed tnef, especially systems that parse untrusted TNEF/MAPI content. This also matters for package maintainers and downstream distro users who rely on packaged tnef builds, including the Debian 8.0 CPE listed in NVD.

Technical summary

NVD describes four type confusions in the file_add_mapi_attrs() function in tnef before 1.4.13. The resulting memory-safety flaws may cause invalid reads and writes controlled by an attacker. NVD maps the issue to CWE-125 and CWE-787. The affected product range is listed as tnef through 1.4.12, and the record links to a patch/commit and release notes showing remediation in the upstream project references.

Defensive priority

High. This is a publicly disclosed, high-severity parser vulnerability with memory-corruption potential in a component that processes attacker-supplied input.

Recommended defensive actions

  • Upgrade tnef to 1.4.13 or later, or apply the relevant vendor package update if you use a distribution build.
  • Inventory hosts and applications that parse TNEF/MAPI content and verify the installed tnef version.
  • Treat untrusted TNEF input as risky until patched systems are confirmed, especially in automated parsing workflows.
  • Check downstream advisories and package changelogs linked in the record for distribution-specific remediation guidance.
  • Use file integrity and package management checks to confirm no vulnerable tnef versions remain deployed.

Evidence notes

The vulnerability description, CVSS vector, CWE mappings, and affected-version range come from the supplied NVD record. The record identifies tnef before 1.4.13 as vulnerable and links to upstream patch/release-note references, including a GitHub commit and ChangeLog. The CVE was published on 2017-02-24 and later modified on 2026-05-13 in the supplied timeline. No KEV listing or ransomware campaign use is present in the provided data.

Sources and references

Verified primary and authoritative sources

  • CVE-2017-6310 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2017-6310

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2017-6310 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2017-6310

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.