CVE-2018-0732
Published: 12 June 2018
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
Priority
Low
CVSS 3 base score: 7.5
Status
| Package | Release | Status |
|---|---|---|
|
openssl Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(1.1.0g-2ubuntu4.1)
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Released
(1.0.2g-1ubuntu4.13)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(1.0.1f-1ubuntu2.26)
|
|
|
Patches: Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=3984ef0b72831da8b3ece4745cac4f8575b19098 (1.0.2) Upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4 (1.1) |
||
|
openssl098 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Does not exist
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
(trusty was needs-triage)
|
|
|
openssl1.0 Launchpad, Ubuntu, Debian |
Upstream |
Needs triage
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(1.0.2n-1ubuntu5.1)
|
|
| Ubuntu 16.04 LTS (Xenial Xerus) |
Does not exist
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Does not exist
|
|