Vulnerability in Mozilla Firefox
CVE-2017-7781
An error occurs in the elliptic curve point addition algorithm that uses mixed Jacobian-affine coordinates where it can yield a result "POINT_AT_INFINITY" when it should not. A man-in-the-middle attacker could use this to interfere with a connection, resulting in an attacked party computing an incorrect shared secret. This vulnerability affects Firefox < 55.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: -0.001
Affected products
- Mozilla Firefox — versions unspecified
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/100383 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-18/ (Vendor Advisory)
- www.securitytracker.com/id/1039124 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2017-7781?
- CVE-2017-7781 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 5.9/10. Published 2018-06-11.
- How severe is CVE-2017-7781?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2017-7781 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.