HIGH
CVE-2017-6309
CWE-125Published: February 24, 2017· Updated: Jun 17, 2026
7.8
CVSS v3.1
Official Description
An issue was discovered in tnef before 1.4.13. Two type confusions have been identified in the parse_file() function. These might lead to invalid read and write operations, controlled by an attacker.
Technical Analysis
CVE-2017-6309 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Vendors & Products
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (12)
→
http://www.debian.org/security/2017/dsa-3798Third Party Advisory
→
http://www.securityfocus.com/bid/96427Third Party Advisory · VDB Entry
→
https://github.com/verdammelt/tnef/blob/master/ChangeLogPatch · Release Notes · Third Party Advisory
→
https://github.com/verdammelt/tnef/commit/8dccf79857ceeb7a6d3e42c1e762e7b865d5344dIssue Tracking · Patch · Third Party Advisory
→
https://security.gentoo.org/glsa/201708-02Third Party Advisory
→
https://www.x41-dsec.de/lab/advisories/x41-2017-004-tnef/Patch · Third Party Advisory
→
http://www.debian.org/security/2017/dsa-3798Third Party Advisory
→
http://www.securityfocus.com/bid/96427Third Party Advisory · VDB Entry
→
https://github.com/verdammelt/tnef/blob/master/ChangeLogPatch · Release Notes · Third Party Advisory
→
https://github.com/verdammelt/tnef/commit/8dccf79857ceeb7a6d3e42c1e762e7b865d5344dIssue Tracking · Patch · Third Party Advisory
→
https://security.gentoo.org/glsa/201708-02Third Party Advisory
→
https://www.x41-dsec.de/lab/advisories/x41-2017-004-tnef/Patch · Third Party Advisory
Quick Facts
CVE IDCVE-2017-6309
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-125
CISA KEVNo
Affected2 vendor(s)
PublishedFeb 24, 2017
Related CVEs (CWE-125)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2017-6309 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.