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VuXML IDDescription
60e26a40-3b25-11da-9484-00123ffe8333openssl -- potential SSL 2.0 rollback

Vulnerability:

Such applications are affected if they use the option SSL_OP_MSIE_SSLV2_RSA_PADDING. This option is implied by use of SSL_OP_ALL, which is intended to work around various bugs in third-party software that might prevent interoperability. The SSL_OP_MSIE_SSLV2_RSA_PADDING option disables a verification step in the SSL 2.0 server supposed to prevent active protocol-version rollback attacks. With this verification step disabled, an attacker acting as a "man in the middle" can force a client and a server to negotiate the SSL 2.0 protocol even if these parties both support SSL 3.0 or TLS 1.0. The SSL 2.0 protocol is known to have severe cryptographic weaknesses and is supported as a fallback only.

Applications using neither SSL_OP_MSIE_SSLV2_RSA_PADDING nor SSL_OP_ALL are not affected. Also, applications that disable use of SSL 2.0 are not affected.


Discovery 2005-10-11
Entry 2005-10-12
Modified 2005-10-25
openssl
openssl-overwrite-base
le 0.9.7g

ge 0.9.8 le 0.9.8_1

ge 0.9.*_20050325 le 0.9.*_20051011

openssl-beta
openssl-beta-overwrite-base
le 0.9.8_1

ge 0.9.*_20050325 le 0.9.*_20051011

compat5x-alpha
compat5x-amd64
compat5x-i386
compat5x-sparc64
< 5.4.0.8

FreeBSD
< 4.10_19

ge 4.11 lt 4.11_13

ge 5.3 lt 5.3_23

ge 5.4 lt 5.4_8

SA-05:21.openssl
CVE-2005-2969
http://www.openssl.org/news/secadv_20051011.txt
68233cba-7774-11d8-89ed-0020ed76ef5aOpenSSL ChangeCipherSpec denial-of-service vulnerability

A remote attacker could cause an application using OpenSSL to crash by performing a specially crafted SSL/TLS handshake.


Discovery 2004-03-17
Entry 2004-03-17
Modified 2004-05-05
openssl
openssl-beta
< 0.9.7d

FreeBSD
ge 4.0 lt 4.8_17

ge 4.9 lt 4.9_4

ge 5.0 lt 5.1_16

ge 5.2 lt 5.2.1_3

CVE-2004-0079
http://www.openssl.org/news/secadv_20040317.txt
SA-04:05.openssl
288574
9899