Vulnerability Details : CVE-2017-12373

Public exploit exists!
A vulnerability in the TLS protocol implementation of legacy Cisco ASA 5500 Series (ASA 5505, 5510, 5520, 5540, and 5550) devices could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat (ROBOT) attack. An attacker could iteratively query a server running a vulnerable TLS stack implementation to perform cryptanalytic operations that may allow decryption of previously captured TLS sessions. Cisco Bug IDs: CSCvg97652.
Published 2017-12-15 20:29:00
Updated 2019-10-09 23:23:02
Source Cisco Systems, Inc.
View at NVD,   CVE.org
Vulnerability category: Information leak

Exploit prediction scoring system (EPSS) score for CVE-2017-12373

EPSS FAQ
0.15%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2017-12373

  • 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-2017-12373

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-2017-12373

  • The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
    Assigned by: ykramarz@cisco.com (Secondary)
  • 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-2017-12373

Products affected by CVE-2017-12373

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