CVE-2017-3731

Truncated packet could crash via OOB read

published May 4, 2017

Patch now

High probability of exploitation

NVD has not assigned a CVSS score to this record. It sits in the 99.1th percentile for exploit probability.

CVSS
—
EPSS
57%
Percentile
99.1
In the wild
Unconfirmed
What it is

If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users should upgrade to 1.1.0d. For Openssl 1.0.2, the crash can be triggered when using RC4-MD5; users who have not disabled that algorithm should update to 1.0.2k.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.57322 · 99.1th percentile
Published
2017-05-04T19:00Z
EPSS history
Timeline
  • 04 MAY 19:00Z
    Truncated packet could crash via OOB read
    cvelistv5