CVE-2017-7805

Source
https://nvd.nist.gov/vuln/detail/CVE-2017-7805
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-7805.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2017-7805
Downstream
Related
Published
2018-06-11T21:29:10Z
Modified
2025-08-09T19:01:27Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

References

Affected packages