xine-lib: Multiple overflows — GLSA 200501-07

xine-lib contains multiple overflows potentially allowing execution of arbitrary code.

Affected packages

Package 	media-libs/xine-lib on all architectures
Affected versions 	< 1_rc8-r1
Unaffected versions 	>= 1_rc8-r1
revision >= 1_rc6-r1

Background

xine-lib is a multimedia library which can be utilized to create multimedia frontends.

Description

Ariel Berkman discovered that xine-lib reads specific input data into an array without checking the input size in demux_aiff.c, making it vulnerable to a buffer overflow (CAN-2004-1300) . iDefense discovered that the PNA_TAG handling code in pnm_get_chunk() does not check if the input size is larger than the buffer size (CAN-2004-1187). iDefense also discovered that in this same function, a negative value could be given to an unsigned variable that specifies the read length of input data (CAN-2004-1188).

Impact

A remote attacker could craft a malicious movie or convince a targeted user to connect to a malicious PNM server, which could result in the execution of arbitrary code with the rights of the user running any xine-lib frontend.

Workaround

There is no known workaround at this time.

Resolution

All xine-lib users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose media-libs/xine-lib

References

    CAN-2004-1187
    CAN-2004-1188
    CAN-2004-1300
    iDefense Advisory
    iDefense Advisory
    Ariel Berkman Advisory