4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
5.7 Medium
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
52.0%
Debian Security Advisory DSA-2763-1 [email protected]
http://www.debian.org/security/ Salvatore Bonaccorso
September 24, 2013 http://www.debian.org/security/faq
Package : pyopenssl
Vulnerability : hostname check bypassing
Problem type : remote
Debian-specific: no
CVE ID : CVE-2013-4314
Debian Bug : 722055
It was discovered that PyOpenSSL, a Python wrapper around the OpenSSL
library, does not properly handle certificates with NULL characters in
the Subject Alternative Name field.
A remote attacker in the position to obtain a certificate for
'www.foo.org\0.example.com' from a CA that a SSL client trusts, could
use this to spoof 'www.foo.org' and conduct man-in-the-middle attacks
between the PyOpenSSL-using client and the SSL server.
For the oldstable distribution (squeeze), this problem has been fixed in
version 0.10-1+squeeze1.
For the stable distribution (wheezy), this problem has been fixed in
version 0.13-2+deb7u1.
For the unstable distribution (sid), this problem has been fixed in
version 0.13-2.1.
We recommend that you upgrade your pyopenssl packages.
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: http://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 7 | ia64 | python3-openssl | < 0.13-2+deb7u1 | python3-openssl_0.13-2+deb7u1_ia64.deb |
Debian | 7 | s390 | python-openssl | < 0.13-2+deb7u1 | python-openssl_0.13-2+deb7u1_s390.deb |
Debian | 6 | mips | python-openssl-dbg | < 0.10-1+squeeze1 | python-openssl-dbg_0.10-1+squeeze1_mips.deb |
Debian | 6 | all | python-openssl-doc | < 0.10-1+squeeze1 | python-openssl-doc_0.10-1+squeeze1_all.deb |
Debian | 6 | mips | python-openssl | < 0.10-1+squeeze1 | python-openssl_0.10-1+squeeze1_mips.deb |
Debian | 7 | powerpc | python3-openssl-dbg | < 0.13-2+deb7u1 | python3-openssl-dbg_0.13-2+deb7u1_powerpc.deb |
Debian | 7 | all | python-openssl-doc | < 0.13-2+deb7u1 | python-openssl-doc_0.13-2+deb7u1_all.deb |
Debian | 7 | kfreebsd-amd64 | python3-openssl | < 0.13-2+deb7u1 | python3-openssl_0.13-2+deb7u1_kfreebsd-amd64.deb |
Debian | 7 | kfreebsd-i386 | python3-openssl | < 0.13-2+deb7u1 | python3-openssl_0.13-2+deb7u1_kfreebsd-i386.deb |
Debian | 6 | ia64 | python-openssl-dbg | < 0.10-1+squeeze1 | python-openssl-dbg_0.10-1+squeeze1_ia64.deb |