Bug 1652605

Summary: CVE-2018-20532 libsolv: NULL pointer dereference in function testcase_read [rhel-8]
Product: Red Hat Enterprise Linux 8 Reporter: shuitao gan <ganshuitao>
Component: libsolvAssignee: Jaroslav Rohel <jrohel>
Status: CLOSED CURRENTRELEASE QA Contact: Karel Srot <ksrot>
Severity: urgent Docs Contact:
Priority: high    
Version: 8.1CC: dmach, ganshuitao, jmracek, rschiron
Target Milestone: rcKeywords: SecurityTracking, Triaged
Target Release: 8.0   
Hardware: All   
OS: All   
Fixed In Version: libsolv-0.6.35-4.el8 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-14 01:58:55 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 1665532    
Description Flags
./testsolv POC2 none

Description shuitao gan 2018-11-22 13:09:41 UTC
Created attachment 1507934 [details]
./testsolv POC2

version: libsolv2.4

There is an illegal address access at ext/testcase.c:2799 testcase_read in libsolv.


The asan debug is as follows:

$./testsolv POC2

==37274==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f5af9e7815f bp 0x7ffc4c843a40 sp 0x7ffc4c8436c0 T0)
    #0 0x7f5af9e7815e in testcase_read /home/company/real_sanitize/libsolv-master/ext/testcase.c:2799
    #1 0x402aa5 in main /home/company/real_sanitize/libsolv-master/tools/testsolv.c:148
    #2 0x7f5af971da3f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x20a3f)
    #3 0x401bb8 in _start (/home/company/real_sanitize/libsolv-master/build/install/bin/testsolv+0x401bb8)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV /home/company/real_sanitize/libsolv-master/ext/testcase.c:2799 testcase_read

Comment 2 Jaroslav Rohel 2018-12-11 07:20:15 UTC
Please, which version of libsolv do you have? The "libsolv2.4" seems strange.
In RHEL 8 is "libsolv-0.6.35".

Comment 3 Jaroslav Rohel 2018-12-11 13:12:24 UTC
PR https://github.com/openSUSE/libsolv/pull/291

Comment 6 Riccardo Schirone 2019-03-15 08:33:38 UTC
*** Bug 1669563 has been marked as a duplicate of this bug. ***