openssl: assertion failure in SSLv2 servers

A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages. A remote attacker could use this flaw to cause a TLS/SSL server using OpenSSL to exit on a failed assertion if it had both the SSLv2 protocol and EXPORT-grade cipher suites enabled...

openssl: assertion failure in SSLv2 servers

A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages. A remote attacker could use this flaw to cause a TLS/SSL server using OpenSSL to exit on a failed assertion if it had both the SSLv2 protocol and EXPORT-grade cipher suites enabled...

DEBIAN-CVE-2016-1978

Use-after-free vulnerability in the ssl3HandleECDHServerKeyExchange function in Mozilla Network Security Services NSS before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL 1 DHE or 2 ECD...

CVE-2016-1978

Use-after-free vulnerability in the ssl3HandleECDHServerKeyExchange function in Mozilla Network Security Services NSS before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL 1 DHE or 2 ECD...

UBUNTU-CVE-2016-1978

Use-after-free vulnerability in the ssl3HandleECDHServerKeyExchange function in Mozilla Network Security Services NSS before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL 1 DHE or 2 ECD...

Amazon Linux AMI : openssl (ALAS-2016-661) (DROWN) (SLOTH)

A padding oracle flaw was found in the Secure Sockets Layer version 2.0 SSLv2 protocol. An attacker can potentially use this flaw to decrypt RSA-encrypted cipher text from a connection using a newer SSL/TLS protocol version, allowing them to decrypt such connections. This cross-protocol attack is...

libssh2: bits/bytes confusion resulting in truncated Diffie-Hellman secret length

A type confusion issue was found in the way libssh2 generated ephemeral secrets for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. This would cause an SSHv2 Diffie-Hellman handshake to use significantly less secure random parameters...

Fedora 22 : libssh2-1.5.0-2.fc22 (2016-7942ee2cc5)

During the SSHv2 handshake when libssh2 is to get a suitable value for 'group order' in the Diffle Hellman negotiation, it would pass in number of bytes to a function that expected number of bits. This would result in the library generating numbers using only an 8th the number of random bits than...

openssl: assertion failure in SSLv2 servers

A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages. A remote attacker could use this flaw to cause a TLS/SSL server using OpenSSL to exit on a failed assertion if it had both the SSLv2 protocol and EXPORT-grade cipher suites enabled...

Debian Security Advisory DSA 3487-1 (libssh2 - security update)

Andreas Schneider reported that libssh2, a SSH2 client-side library, passes the number of bytes to a function that expects number of bits during the SSHv2 handshake when libssh2 is to get a suitable value for group order in the Diffie-Hellman negotiation. This weakens significantly the handshake...

Debian Security Advisory DSA 3503-1 (linux - security update)

Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service, information leak or data loss. CVE-2013-4312 Tetsuo Handa discovered that users can use pipes queued on local Unix sockets to allocate an unfair share of kernel memory,...

Fedora 22 : proftpd-1.3.5a-5.fc22 (2015-97055df8a0)

Part of the SFTP handshake involves 'extensions', which are key/value pairs, comprised of strings. In SSH, strings are encoded for network transport as a 32-bit length, followed by the bytes. The modsftp module currently places no bounds/length limitations when reading these SFTP extension...

openssl: assertion failure in SSLv2 servers

A denial of service flaw was found in the way OpenSSL handled SSLv2 handshake messages. A remote attacker could use this flaw to cause a TLS/SSL server using OpenSSL to exit on a failed assertion if it had both the SSLv2 protocol and EXPORT-grade cipher suites enabled...

openssl: Divide-and-conquer session key recovery in SSLv2

It was discovered that the SSLv2 servers using OpenSSL accepted SSLv2 connection handshakes that indicated non-zero clear key length for non-export cipher suites. An attacker could use this flaw to decrypt recorded SSLv2 sessions with the server by using it as a decryption oracle...

lib32-libssh2: man-in-the-middle

There is a bits/bytes confusion bug resulting in generation of a significantly short ephemeral secret for the diffie-hellman-group1 and diffie-hellman-group14 key exchange methods. The resulting secret is 128 bits long, instead of the recommended sizes of 1024 and 2048 bits respectively. There ar...

Debian DSA-3487-1 : libssh2 - security update

Andreas Schneider reported that libssh2, a SSH2 client-side library, passes the number of bytes to a function that expects number of bits during the SSHv2 handshake when libssh2 is to get a suitable value for'group order' in the Diffie-Hellman negotiation. This weakens significantly the handshake...

[SECURITY] [DSA 3487-1] libssh2 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3487-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso February 23, 2016 https://www.debian.org/security/faq -...

[SECURITY] [DSA 3487-1] libssh2 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3487-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso February 23, 2016 https://www.debian.org/security/faq -...

DSA-3487-1 libssh2 - security update

Bulletin has no description...

[SECURITY] [DLA 421-1] openssl security update

Package : openssl Version : 0.9.8o-4squeeze23 CVE ID : CVE-2015-3197 CVE-2015-3197: A malicious client can negotiate SSLv2 ciphers that have been disabled on the server and complete SSLv2 handshakes even if all SSLv2 ciphers have been disabled, provided that the SSLv2 protocol was not also disabl...