Bug 1652605 - CVE-2018-20532 libsolv: NULL pointer dereference in function testcase_read [rhel-8]
Summary: CVE-2018-20532 libsolv: NULL pointer dereference in function testcase_read [r...
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: libsolv
Version: 8.1
Hardware: All
OS: All
Target Milestone: rc
: 8.0
Assignee: Jaroslav Rohel
QA Contact: Karel Srot
: 1669563 (view as bug list)
Depends On:
Blocks: CVE-2018-20532
TreeView+ depends on / blocked
Reported: 2018-11-22 13:09 UTC by shuitao gan
Modified: 2019-06-14 01:58 UTC (History)
4 users (show)

Fixed In Version: libsolv-0.6.35-4.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-06-14 01:58:55 UTC
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)
./testsolv POC2 (826 bytes, text/plain)
2018-11-22 13:09 UTC, shuitao gan
no flags Details

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. ***

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