Debian 8: DSA-3271-1 Critical Alert For Nbd Denial Of Service
debian
May 23, 2015
Tuomas Räsänen discovered that unsafe signal handling in nbd-server, the server for the Network Block Device protocol, could allow remote attackers to cause a deadlock in the...
Topics Covered
Summary
Tuomas Räsänen also discovered that the modern-style negotiation was
carried out in the main server process before forking the actual client
handler. This could allow a remote attacker to cause a denial of service
(crash) by querying a non-existent export. This issue only affected the
oldstable distribution (wheezy).
For the oldstable distribution (wheezy), these problems have been fixed
in version 1:3.2-4~deb7u5.
For the stable distribution (jessie), these problems have been fixed in
version 1:3.8-4+deb8u1.
For the testing distribution (stretch), these problems have been fixed
in version 1:3.10-1.
For the unstable distribution (sid), these problems have been fixed in
version 1:3.10-1.
We recommend that you upgrade your nbd 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/
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Package: nbd
CVE ID: CVE-2013-7441 CVE-2015-0847
Topics Covered
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