Client DoS due to large DH parameter
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).
CVE-2018-0732
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2018-0732
OpenSSL
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "OpenSSL",
"product": "OpenSSL",
"versions": [
{
"status": "affected",
"version": "Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h)"
},
{
"status": "affected",
"version": "Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o)"
}
]
}
]- Related CVEs
- CVE-2018-0732
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #15916 · Revision 1
- Added to Heist Feed
- Publisher date