vulnwire
7.5high

CVE-2017-3733in critical feed

Encrypt-Then-Mac renegotiation crash

Published 9 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
12.9%
percentile 96%
Public exploits
0
none known

During a renegotiation handshake if the Encrypt-Then-Mac extension is negotiated where it was not in the original handshake (or vice-versa) then this can cause OpenSSL 1.1.0 before 1.1.0e to crash (dependent on ciphersuite). Both clients and servers are affected.

Exploit prediction (EPSS)

12.87% probability of exploitation in the next 30 days, higher than 96% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD2.05.0AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • OpenSSL OpenSSL

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds
OpenSSL (RSS, critical only)

References

  • securityfocus.com /bid/96269 · vdb-entry, x_refsource_BID, x_transferred
  • openssl.org /news/secadv/20170216.txt · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpujan2018-3236628.html · x_refsource_CONFIRM, x_transferred
  • h20566.www2.hpe.com /hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbgn03728en_us · x_refsource_CONFIRM, x_transferred
  • oracle.com /technetwork/security-advisory/cpuoct2017-3236626.html · x_refsource_CONFIRM, x_transferred
  • github.com /openssl/openssl/commit/4ad93618d26a3ea23d36ad5498ff4f59eff3a4d2 · x_refsource_MISC, x_transferred
  • securitytracker.com /id/1037846 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • oracle.com /technetwork/security-advisory/cpuapr2019-5072813.html · x_refsource_MISC, x_transferred

Sources

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