CVE-2019-6486 — Go before 1

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

01What is this vulnerability?

Go before 1.10.8 and 1.11.x before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks.

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: 2019-01-24T05:00:00.000Z
• Last modified: 2024-08-04T20:23:20.998Z

09References

• github.com — https://github.com/golang/go/issues/29903
• www.debian.org — https://www.debian.org/security/2019/dsa-4380
• groups.google.com — https://groups.google.com/forum/#%21topic/golang-announce/mVeX35iXuSw
• www.debian.org — https://www.debian.org/security/2019/dsa-4379
• github.com — https://github.com/golang/go/commit/42b42f71cf8f5956c09e66230293dfb5db652360
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2019/02/msg00009.html
• www.securityfocus.com — http://www.securityfocus.com/bid/106740
• github.com — https://github.com/google/wycheproof
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00042.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00060.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00011.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00015.html