cbcvebase.
CVE-2016-2183
published 2016-09-01

CVE-2016-2183: The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four…

PriorityP272high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
EXPLOIT
EPSS
95.71%
99.9th percentile
The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as demonstrated by an HTTPS session using Triple DES in CBC mode, aka a "Sweet32" attack.

Affected

61 ranges· showing 25
VendorProductVersion rangeFixed in
ciscocontent_security_management_appliance
ciscocontent_security_management_appliance
github.comkyverno_kyverno>= 0 < 1.9.51.9.5
mozillanss>= 0 < 2:3.28.4-0ubuntu0.14.04.12:3.28.4-0ubuntu0.14.04.1
mozillanss>= 0 < 2:3.28.4-0ubuntu0.16.04.12:3.28.4-0ubuntu0.16.04.1
nodejsnode.js>= 0.10.0 < 0.10.470.10.47
nodejsnode.js>= 0.12.0 < 0.12.160.12.16
nodejsnode.js>= 4.0.0 < 4.1.24.1.2
nodejsnode.js>= 4.2.0 < 4.6.04.6.0
nodejsnode.js>= 6.0.0 < 6.7.06.7.0
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl
opensslopenssl

Detection & IOCsextracted from sources · hover to see the quote

  • Detect use of Triple DES (3DES) cipher in TLS/SSL sessions — a necessary precondition for SWEET32 exploitation. Flag any TLS negotiation selecting a 3DES-based cipher suite.
  • Monitor for abnormally long-duration TLS/HTTPS sessions using 3DES in CBC mode, particularly those accumulating ~32 GB of encrypted traffic under the same key — the threshold needed for a successful birthday attack.
  • Alert on unexpectedly large volumes of encrypted traffic on systems using older SSL/TLS versions with 3DES enabled, especially repetitive or automated long-lived sessions.
  • Flag TCP port 1243 traffic using 3DES encryption — Tenable LCE was found errantly using 3DES on this port, making it a specific detection target for misconfigured 3DES usage.
  • Use vulnerability scanners (e.g., Nessus) to flag SSL/TLS configurations advertising 3DES cipher suites. Review SIEM logs for long-duration encrypted sessions using insecure algorithms like 3DES.
  • ·CVE-2016-2183 (SWEET32) is a cryptographic weakness in 64-bit block ciphers (3DES/DES), not a memory corruption bug. Exploitation requires a passive MITM position and a long-duration session accumulating ~32 GB of ciphertext — it is not a trivial remote code execution.

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:P/I:N/A:N
ghsa7.5HIGH
osv9.8CRITICAL
vendor_ubuntu9.8CRITICAL
vendor_oracle7.5HIGH
vendor_redhat7.5HIGH
vendor_cisco5.5MEDIUM
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