CVE-2020-12651 — SecureCRT before 8

SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can trigger a line number to CSI functions that exceeds INT_MAX.

01What is this vulnerability?

SecureCRT before 8.7.2 allows remote attackers to execute arbitrary code via an Integer Overflow and a Buffer Overflow because a banner can trigger a line number to CSI functions that exceeds INT_MAX.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-05-15T17:31:50.000Z
• Last modified: 2024-08-04T12:04:22.534Z

09References

• www.vandyke.com — https://www.vandyke.com/support/advisory/index.html
• twitter.com — https://twitter.com/taviso/status/1261079774190919680
• bugs.chromium.org — https://bugs.chromium.org/p/project-zero/issues/detail?id=2033
• www.vandyke.com — https://www.vandyke.com/products/securecrt/history.txt