Red Hat Bugzilla – Bug 245219
clamav < 0.90.3 multiple vulnerabilities
Last modified: 2007-11-30 17:12:08 EST
"unsp.c in ClamAV before 0.90.3 and 0.91 before 0.91rc1 does not properly
calculate the end of a certain buffer, with unknown impact and remote attack
"libclamav/others.c in ClamAV before 0.90.3 and 0.91 before 0.91rc1 uses
insecure permissions for temporary files that are created by the
cli_gentempstream function in clamd/clamdscan, which might allow local users to
read sensitive files."
"The parsing engine in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows
remote attackers to bypass scanning via a RAR file with a header flag value of
10, which can be processed by WinRAR."
"unrar.c in libclamav in ClamAV before 0.90.3 and 0.91 before 0.91rc1 allows
remote attackers to cause a denial of service (core dump) via a crafted RAR file
with a modified vm_codesize value, which triggers a heap-based buffer overflow."
Not checked whether 0.88.x in FC-6 and earlier are affected.
One more that I didn't find in Bugzilla and apparently affects 0.90.x series
earlier than 0.90.3:
"File descriptor leak in the PDF handler in Clam AntiVirus (ClamAV) allows
remote attackers to cause a denial of service via a crafted PDF file."
Another problem is, that freshclam is writing to logs this:
Reading CVD header (daily.cvd): Ignoring mirror 188.8.131.52 (too often connection
s with outdated version)
I think updating is not working properly. This does not happen always and I am
unable to reproduce this on other machine.
And last problem, libclamav is loading it's database a long time (aprox. 2-5
minutes). This bug can be also fixed with upgrade to clamav 0.91.
What is the problem with releasing clamav-0.91.2 built in Koji?
How can I help to release clamav updates with less time? My Fedora system is
vulnerable to some vulnerabilities with old clamav. :-(