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).
Published 2017-12-12 21:29:00
Updated 2019-10-03 00:03:26
Source MITRE
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2017-1000385

0.28%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 64 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2017-1000385

  • Scanner for Bleichenbacher Oracle in RSA PKCS #1 v1.5
    Disclosure Date: 2009-06-17
    First seen: 2020-04-26
    auxiliary/scanner/ssl/bleichenbacher_oracle
    Some TLS implementations handle errors processing RSA key exchanges and encryption (PKCS #1 v1.5 messages) in a broken way that leads an adaptive chosen-chiphertext attack. Attackers cannot recover a server's private key, but they can decrypt and sign messages with i

CVSS scores for CVE-2017-1000385

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
NIST
5.9
MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.2
3.6
NIST

CWE ids for CVE-2017-1000385

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-1000385

Products affected by CVE-2017-1000385

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