Debian DLA-1663-1 : python3.4 security update
Critical Nessus Plugin ID 122036
SynopsisThe remote Debian host is missing a security update.
DescriptionThis DLA fixes a a problem parsing x509 certificates, an pickle
integer overflow, and some other minor issues :
The smtplib library in CPython does not return an error when StartTLS
fails, which might allow man-in-the-middle attackers to bypass the TLS
protections by leveraging a network position between the client and
the registry to block the StartTLS command, aka a 'StartTLS stripping
Integer overflow in the get_data function in zipimport.c in CPython
allows remote attackers to have unspecified impact via a negative data
size value, which triggers a heap-based buffer overflow.
CRLF injection vulnerability in the HTTPConnection.putheader function
in urllib2 and urllib in CPython allows remote attackers to inject
arbitrary HTTP headers via CRLF sequences in a URL.
Modules/_pickle.c has an integer overflow via a large LONG_BINPUT
value that is mishandled during a 'resize to twice the size' attempt.
This issue might cause memory exhaustion, but is only relevant if the
pickle format is used for serializing tens or hundreds of gigabytes of
NULL pointer dereference using a specially crafted X509 certificate.
For Debian 8 'Jessie', these problems have been fixed in version
We recommend that you upgrade your python3.4 packages.
NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues.
SolutionUpgrade the affected packages.