CVE-2019-19481 log

Source	CVE Red Hat MITRE NVD Debian Ubuntu SUSE Alpine Mageia CVE Details CIRCL Bugs Arch Linux Red Hat Gentoo SUSE GitHub Lists oss-security full-disclosure bugtraq Misc GitHub code web search
Severity	Medium
Remote	No
Type	Denial of service
Description	An issue was discovered in OpenSC before 0.20.0. libopensc/card-cac1.c mishandles buffer limits for CAC certificates, leading to an out-of-bounds read.

Group	Package	Affected	Fixed	Severity	Status	Ticket
AVG-1106	opensc	0.19.0-2	0.20.0-1	Medium	Fixed	FS#65082

Date	Advisory	Group	Package	Severity	Type
04 Mar 2020	ASA-202003-2	AVG-1106	opensc	Medium	denial of service

References
https://github.com/OpenSC/OpenSC/commit/b75c002cfb1fd61cd20ec938ff4937d7b1a94278 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18618

Notes
The existing next_len = MIN(left, apdu.sw2); was calculated without taking into account the already read bytes (len should have been decremented before the call to MIN()).