Gentoo: openssl multiple vulnerabilities
Several vulnerabilities have been found in the OpenSSL toolkit.
Summary
- - --------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT 200303-20 - - ---------------------------------------------------------------------
- - ---------------------------------------------------------------------
- From advisory:
"Czech cryptologists Vlastimil Klima, Ondrej Pokorny, and Tomas Rosa have come up with an extension of the "Bleichenbacher attack" on RSA with PKCS #1 v1.5 padding as used in SSL 3.0 and TLS 1.0. Their attack requires the attacker to open millions of SSL/TLS connections to the server under attack; the server's behaviour when faced with specially made-up RSA ciphertexts can reveal information that in effect allows the attacker to perform a single RSA private key operation on a ciphertext of its choice using the server's RSA key. Note that the server's RSA key is not compromised in this attack."
Read the full advisory at: openssl
SOLUTION
It is recommended that all Gentoo Linux users who are running dev-libs/openssl upgrade to openssl-0.9.6i-r2 as follows:
emerge sync emerge openssl emerge clean
- - --------------------------------------------------------------------- aliz@gentoo.org - GnuPG key is available at - - ---------------------------------------------------------------------
0.9.6i-r2
Resolution
References
Availability
Concerns
Severity
PACKAGE : openssl
SUMMARY : Klima-Pokorny-Rosa attack
DATE : 2003-03-24 11:51 UTC
EXPLOIT : remote
VERSIONS AFFECTED : <0.9.6i-r2 : fixed version>=0.9.6i-r2
CVE : CAN-2003-0131
