Servers and applications
CVE-2009-2409
The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time. NOTE: the scope of this issue is currently limited because…
- Severity
- Medium 5.1
- Published
- 30 Jul 2009
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 21 Oct 2026
- Exploit chance
- 4.3% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 12 Nov 2026
- Attack
- Over the network · Only under certain conditions · No login needed
- Attacker can
- Read some data · Change some data · Slow it down
- CVSS vector
AV:N/AC:H/Au:N/C:P/I:P/A:P- Sources
- NVD
Description
The Network Security Services (NSS) library before 3.12.3, as used in Firefox; GnuTLS before 2.6.4 and 2.7.4; OpenSSL 0.9.8 through 0.9.8k; and other products support MD2 with X.509 certificates, which might allow remote attackers to spoof certificates by using MD2 design flaws to generate a hash collision in less than brute-force time. NOTE: the scope of this issue is currently limited because the amount of computation required is still large.
Affected software
| Software | Affected versions |
|---|---|
OpenSSLServers and applications · cpe:a:openssl:openssl |
|