CVE-2017-3733

high

Published 2017-05-04 · Modified 2026-05-13

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CVSS v3

7.5

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.5

Description

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.

Predictions

Exploit likelihood

83%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
debian	bookworm	fixed	`1.1.0e-1`
debian	bullseye	fixed	`1.1.0e-1`
debian	forky	fixed	`1.1.0e-1`
debian	sid	fixed	`1.1.0e-1`
debian	trixie	fixed	`1.1.0e-1`

Application impact

Vendor	Product	Versions
openssl	openssl	`1.1.0`
openssl	openssl	`1.1.0a`
openssl	openssl	`1.1.0b`
openssl	openssl	`1.1.0c`
openssl	openssl	`1.1.0d`
hp	operations_agent	`11.14`
hp	operations_agent	`11.15`

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.