THREATPORT/VULNERABILITY/CVE-2017-12373
MEDIUM SEVERITY

CVE-2017-12373

Adaptive Security Appliance 5505 Firmware vulnerability

CVSS
5.9
EPSS
12.8%
EPSS pct
96th
Exploited
No known
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.
Affected vendor
Cisco
Affected product
Adaptive Security Appliance 5505 Firmware
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2017-12-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 12.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2017-12373

  • Confirm whether Cisco Adaptive Security Appliance 5505 Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-12373.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-12373

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-12373 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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