CVE-2016-8622
9.8
CRITICAL
CVSS 3.1
EPSS 1.9%
Description
The URL percent-encoding decode function in libcurl before 7.51.0 is called `curl_easy_unescape`. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get either just truncated or both truncated and turned negative. That could then lead to libcurl writing outside of its heap based buffer.
How to fix CVE-2016-8622
To remediate CVE-2016-8622, upgrade the affected package to a fixed version below.
- —upgrade to 7.51.0-r0 or later
- —upgrade to 7.51.0-1 or later
Is CVE-2016-8622 being exploited?
Low — EPSS is 1.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.51.0-r0
- from 0, < 7.51.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |