FreeRDP has a `size_t` underflow in ADPCM decoder leads to heap-buffer-overflow write
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a size_t underflow in the IMA-ADPCM and MS-ADPCM audio decoders leads to heap-buffer-overflow write via the RDPSND audio channel. In libfreerdp/codec/dsp.c, the IMA-ADPCM and MS-ADPCM decoders subtract block header sizes from a size_t variable without checking for underflow. When nBlockAlign (received from the server) is set such that size % block_size == 0 triggers the header parsing at a point where size is smaller than the header (4 or 8 bytes), the subtraction wraps size to ~SIZE_MAX. The while (size > 0) loop then continues for an astronomical number of iterations. This vulnerability is fixed in 3.24.0.
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Affected products
17- osv-coords15 versionspkg:rpm/almalinux/freerdppkg:rpm/almalinux/freerdp-develpkg:rpm/almalinux/freerdp-libspkg:rpm/almalinux/freerdp-serverpkg:rpm/almalinux/libwinprpkg:rpm/almalinux/libwinpr-develpkg:rpm/opensuse/freerdp2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/freerdp&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/freerdp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp2&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/freerdp&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 2:3.10.3-5.el10_1.8+ 14 more
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2:3.10.3-5.el10_1.8
- (no CPE)range: < 2.11.7-6.1
- (no CPE)range: < 2.11.2-150600.4.18.1
- (no CPE)range: < 3.24.1-1.1
- (no CPE)range: < 2.11.7-150700.3.14.1
- (no CPE)range: < 2.11.7-150700.3.14.1
- (no CPE)range: < 2.11.2-150600.4.18.1
- (no CPE)range: < 2.1.2-12.63.1
- (no CPE)range: < 2.1.2-12.63.1
- (no CPE)range: < 3.10.3-150700.3.9.1
Patches
Vulnerability mechanics
References
2- github.com/FreeRDP/FreeRDP/commit/16df2300e1e3f5a51f68fb1626429e58b531b7c8mitrex_refsource_MISC
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-85x9-4xxp-xhm5mitrex_refsource_CONFIRM
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