CVE-2017-1000385

medium

Published 2017-12-12 · Modified 2026-05-13

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CVSS v3

5.9

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

CVSS v4 NEW

—

not yet in upstream

VIR risk

6.9

Description

The Erlang otp TLS server answers with different TLS alerts to different error types in the RSA PKCS #1 1.5 padding. This allows an attacker to decrypt content or sign messages with the server's private key (this is a variation of the Bleichenbacher attack).

Predictions

Exploit likelihood

100%

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.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Metasploit modules

auxiliary_scanner/ssl/bleichenbacher_oracle rank 300

Scanner for Bleichenbacher Oracle in RSA PKCS #1 v1.5

Source code queued for fetch — refresh in a moment.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Mixed 7 releases

Version	Status	Fixed in
trixie	Fixed	`1:20.1.7+dfsg-1`
sid	Fixed	`1:20.1.7+dfsg-1`
forky	Fixed	`1:20.1.7+dfsg-1`
bullseye	Fixed	`1:20.1.7+dfsg-1`
bookworm	Fixed	`1:20.1.7+dfsg-1`
9.0	Affected	—
8.0	Affected	—

Application impact

Vendor	Product	Versions
erlang	erlang\/otp	`18.3.4.7`
erlang	erlang\/otp	`19.3.6.4`
erlang	erlang\/otp	`20.1.7`

References

CWEs

CWE-203

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

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