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The remote Scientific Linux host is missing one or more security
Wesley Miaw discovered that when deflate compression was used, libcurl
could call the registered write callback function with data exceeding
the documented limit. A malicious server could use this flaw to crash
an application using libcurl or, potentially, execute arbitrary code.
Note: This issue only affected applications using libcurl that rely on
the documented data size limit, and that copy the data to the
insufficiently sized buffer. (CVE-2010-0734)
This update also fixes the following bugs :
- when using curl to upload a file, if the connection was
broken or reset by the server during the transfer, curl
immediately started using 100% CPU and failed to
acknowledge that the transfer had failed. With this
update, curl displays an appropriate error message and
exits when an upload fails mid-transfer due to a broken
or reset connection. (BZ#479967)
- libcurl experienced a segmentation fault when attempting
to reuse a connection after performing GSS-negotiate
authentication, which in turn caused the curl program to
crash. This update fixes this bug so that reused
connections are able to be successfully established even
after GSS-negotiate authentication has been performed.
As well, this update adds the following enhancements :
- curl now supports loading Certificate Revocation Lists
(CRLs) from a Privacy Enhanced Mail (PEM) file. When
curl attempts to access sites that have had their
certificate revoked in a CRL, curl refuses access to
those sites. (BZ#532069)
- the curl(1) manual page has been updated to clarify that
the '--socks4' and '--socks5' options do not work with
the IPv6, FTPS, or LDAP protocols. (BZ#473128)
- the curl utility's program help, which is accessed by
running 'curl -h', has been updated with descriptions
for the '--ftp-account' and '--ftp-alternative-to-user'
All running applications using libcurl must be restarted for the
update to take effect.
See also :
Update the affected curl and / or curl-devel packages.
Risk factor :
Medium / CVSS Base Score : 6.8
Family: Scientific Linux Local Security Checks
Nessus Plugin ID: 60765 ()
CVE ID: CVE-2010-0734
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