-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3500-1 security@xxxxxxxxxx https://www.debian.org/security/ Alessandro Ghedini March 01, 2016 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : openssl CVE ID : CVE-2016-0702 CVE-2016-0705 CVE-2016-0797 CVE-2016-0798 CVE-2016-0799 Several vulnerabilities were discovered in OpenSSL, a Secure Socket Layer toolkit. CVE-2016-0702 Yuval Yarom from the University of Adelaide and NICTA, Daniel Genkin from Technion and Tel Aviv University, and Nadia Heninger from the University of Pennsylvania discovered a side-channel attack which makes use of cache-bank conflicts on the Intel Sandy-Bridge microarchitecture. This could allow local attackers to recover RSA private keys. CVE-2016-0705 Adam Langley from Google discovered a double free bug when parsing malformed DSA private keys. This could allow remote attackers to cause a denial of service or memory corruption in applications parsing DSA private keys received from untrusted sources. CVE-2016-0797 Guido Vranken discovered an integer overflow in the BN_hex2bn and BN_dec2bn functions that can lead to a NULL pointer dereference and heap corruption. This could allow remote attackers to cause a denial of service or memory corruption in applications processing hex or dec data received from untrusted sources. CVE-2016-0798 Emilia Käsper of the OpenSSL development team discovered a memory leak in the SRP database lookup code. To mitigate the memory leak, the seed handling in SRP_VBASE_get_by_user is now disabled even if the user has configured a seed. Applications are advised to migrate to the SRP_VBASE_get1_by_user function. CVE-2016-0799 Guido Vranken discovered an integer overflow in the BIO_*printf functions that could lead to an OOB read when printing very long strings. Additionally the internal doapr_outch function can attempt to write to an arbitrary memory location in the event of a memory allocation failure. These issues will only occur on platforms where sizeof(size_t) > sizeof(int) like many 64 bit systems. This could allow remote attackers to cause a denial of service or memory corruption in applications that pass large amounts of untrusted data to the BIO_*printf functions. Additionally the EXPORT and LOW ciphers were disabled since thay could be used as part of the DROWN (CVE-2016-0800) and SLOTH (CVE-2015-7575) attacks, but note that the oldstable (wheezye) and stable (jessie) distributions are not affected by those attacks since the SSLv2 protocol has already been dropped in the openssl package version 1.0.0c-2. For the oldstable distribution (wheezy), these problems have been fixed in version 1.0.1e-2+deb7u20. For the stable distribution (jessie), these problems have been fixed in version 1.0.1k-3+deb8u4. For the unstable distribution (sid), these problems will be fixed shortly. We recommend that you upgrade your openssl packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAEBCgAGBQJW1ah7AAoJEK+lG9bN5XPLwZAQAIC8QcmipL7pZmkkn2k3w0w2 HvaHZEFOnbMXLRqKquu1L+RC57TemNqVZ/0kH4qlrXZs5W+Y2ZAEcvBCFEC8OFEJ yuz6GPnmZLqNeIIrnlJS4p9JiB06KEfadwACm4+y8YcWde8651CYavbZzlJAybOk K48rdvG5A1h0VGaz9PUSdfMmesnHyJCixSANOSmgZ6i9FKLMLuU/+bZu4hHOwnWl e4oHFv4XEvc2C5CxKiDDVhIu5J+Mx2lnFXQ+DBcau0JNqphx2zCulM6+ZLDMGK4P LrxLf0IuLpQ+s5CNhiOttkP3XgCaC8iMSOXx1cOx73qRRDki5MnQuCu7t5WYMuw7 vXDWdCq8uqukXF3H0pZWGieOIa1v1cqocWZa+eH2Al5nIET3593ARgDXV+XzosUX 3cYMMh7dsJWFpaGFgnhpsE80843aE8Q4eVFAjLw83nBTtyg5hJ2qEqGs5L/gLUXR 4F+eKBLnEn79LwC5XeLq0N5o7xCnYlpuMluOH/AQi+AHF29Z1UQ7ZmMkR/iqvt0D J+8MzDfwnlUqZrvSNgrQvIBI+Lu7cxdm8B1GSD/nUqiQDV4CHe2tc++Wfbqgl4F9 LrHZWA/j1wGuGMT/vDjXQWRSl8lIhRvAMm/FMoyBiGndNTh5TK5I9Tykazb/xp++ kW1cZiPsdcvSgmhPVjD7 =nYQh -----END PGP SIGNATURE-----