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Vulnerability record · public intelligence
CVE-2017-3731
HIGH

Truncated packet could crash via OOB read

Published May 4, 2017 · Updated Oct 23, 2026

Severity · CVSSHIGH · 7.5
Known exploitationNot listed
EPSS / likelihood57.32%
QFinch risk score15 / 100

Original summary

Normalized public record · Updated Oct 23, 2026

Truncated packet could crash via OOB read

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSS
SSVC priority
MEDIUM
Confidence
15%
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. RHSA-2018:2185 ↗
  2. RHSA-2018:2186 ↗
  3. security.netapp.com ↗
  4. www.oracle.com ↗
  5. 95813 ↗
  6. RHSA-2017:0286 ↗
  7. FreeBSD-SA-17:02 ↗
  8. www.openssl.org ↗
  9. 1037717 ↗
  10. www.oracle.com ↗
  11. www.tenable.com ↗
  12. source.android.com ↗

Record history

Published May 4, 2017 · Last refreshed Oct 23, 2026