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OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
openpkg-security@openpkg.org openpkg@openpkg.org
OpenPKG-SA-2004.024 19-May-2004
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Package: neon, subversion, cadaver, sitecopy, tla
Vulnerability: remote code execution
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= neon-0.24.5-20040414 >= neon-0.24.6-20040519
<= subversion-1.0.2-20040518 >= subversion-1.0.3-20040519
<= cadaver-0.22.1-20040415 >= cadaver-0.22.2-20040519
<= sitecopy-0.13.4-20040416 >= sitecopy-0.13.4-20040519
<= tla-1.2-20040416 >= tla-1.2-20040519
OpenPKG 2.0 <= neon-0.24.4-2.0.1 >= neon-0.24.4-2.0.2
<= subversion-1.0.0-2.0.1 >= subversion-1.0.0-2.0.2
<= cadaver-0.22.0-2.0.1 >= cadaver-0.22.0-2.0.2
<= sitecopy-0.13.4-2.0.1 >= sitecopy-0.13.4-2.0.2
OpenPKG 1.3 <= neon-0.24.0-1.3.1 >= neon-0.24.0-1.3.2
<= sitecopy-0.13.3-1.3.1 >= sitecopy-0.13.3-1.3.2
Dependent Packages: none
Description:
Stefan Esser discovered [1] a vulnerability within a date parsing
function in the Neon HTTP and WebDAV client library [0]. If a special
crafted date string is passed to the ne_rfc1036_parse() function it
may trigger a sscanf() string overflow into static heap variables.
Exploitability heavily depends on the application linked against
Neon, but is considered trivial in cases where an out-of-memory
condition can be triggered, because the overflowing variable is placed
in front of the Neon out-of-memory callback function pointer. The
Common Vulnerabilities and Exposures (CVE) project assigned the id
CAN-2004-0398 [2] to the problem.
Please check whether you are affected by running "/bin/rpm
-q neon" (respectively for "subversion", "cadaver", "sitecopy" and
"tla"). If you have one of the packages installed and its version is
affected (see above), we recommend that you immediately upgrade it
(see Solution) [3][4].
Solution:
Select the updated source RPM appropriate for your OpenPKG release
[5][6][7][8][9], fetch it from the OpenPKG FTP service [11][12] or
a mirror location, verify its integrity [13], build a corresponding
binary RPM from it [3] and update your OpenPKG installation by
applying the binary RPM [4]. For the most recent release OpenPKG 2.0,
perform the following operations to permanently fix the security
problem (for other releases adjust accordingly).
$ ftp ftp.openpkg.org
ftp> bin
ftp> cd release/2.0/UPD
ftp> get neon-0.24.4-2.0.2.src.rpm
ftp> bye
$ /bin/openpkg rpm -v --checksig neon-0.24.4-2.0.2.src.rpm
$ /bin/openpkg rpm --rebuild neon-0.24.4-2.0.2.src.rpm
$ su -
# /bin/openpkg rpm -Fvh /RPM/PKG/neon-0.24.4-2.0.2.*.rpm
Additionally, perform similar steps for the "subversion", "cadaver",
"sitecopy" and "tla" packages.
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References:
[0] http://www.webdav.org/neon/
[1] http://security.e-matters.de/advisories/062004.html
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0398
[3] http://www.openpkg.org/tutorial.html#regular-source
[4] http://www.openpkg.org/tutorial.html#regular-binary
[5] ftp://ftp.openpkg.org/release/1.3/UPD/neon-0.24.0-1.3.2.src.rpm
[6] ftp://ftp.openpkg.org/release/1.3/UPD/sitecopy-0.13.3-1.3.2.src.rpm
[7] ftp://ftp.openpkg.org/release/2.0/UPD/neon-0.24.4-2.0.2.src.rpm
[8] ftp://ftp.openpkg.org/release/2.0/UPD/subversion-1.0.0-2.0.2.src.rpm
[9] ftp://ftp.openpkg.org/release/2.0/UPD/cadaver-0.22.0-2.0.2.src.rpm
[10] ftp://ftp.openpkg.org/release/2.0/UPD/sitecopy-0.13.4-2.0.2.src.rpm
[11] ftp://ftp.openpkg.org/release/1.3/UPD/
[12] ftp://ftp.openpkg.org/release/2.0/UPD/
[13] http://www.openpkg.org/security.html#signature
________________________________________________________________________
For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG " (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
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