https://bz.apache.org/bugzilla/show_bug.cgi?id=66692
Bug ID: 66692
Summary: AddressSanitizer: SEGV
(/lib/x86_64-linux-gnu/libdb-5.3.so+0x55a7b) in
__ham_insertpair
Product: Apache httpd-2
Version: 2.4.54
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mod_authn_dbm
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 38606
--> https://bz.apache.org/bugzilla/attachment.cgi?id=38606&action=edit
crash seed
Hello htdbm developers,
We recently conducted a fuzzing test on htdbm and discovered a SEGV bug. We
would like to provide a detailed description of the bug and seek your
assistance in addressing it.
version:
htdbm: 2.4.54
gcc:gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
ubuntu: 20.04
command to reproduce:
htdbm -b SEGV_2
SEGV_2 is attached to this report.
ASAN report:
=================================================================
==2664561==ERROR: AddressSanitizer: SEGV on unknown address 0x62100001295b (pc
0x7f9fa08a6a7b bp 0x62100000297a sp 0x7ffe19e35310 T0)
==2664561==The signal is caused by a WRITE memory access.
#0 0x7f9fa08a6a7b in __ham_insertpair
(/lib/x86_64-linux-gnu/libdb-5.3.so+0x55a7b)
#1 0x7f9fa08a9523 in __ham_add_el
(/lib/x86_64-linux-gnu/libdb-5.3.so+0x58523)
#2 0x7f9fa08a0f46 (/lib/x86_64-linux-gnu/libdb-5.3.so+0x4ff46)
#3 0x7f9fa0937669 in __dbc_iput
(/lib/x86_64-linux-gnu/libdb-5.3.so+0xe6669)
#4 0x7f9fa09323b9 in __db_put (/lib/x86_64-linux-gnu/libdb-5.3.so+0xe13b9)
#5 0x7f9fa0947c25 in __db_put_pp
(/lib/x86_64-linux-gnu/libdb-5.3.so+0xf6c25)
#6 0x7f9fa15908f4
(/usr/lib/x86_64-linux-gnu/apr-util-1/apr_dbm_db-1.so+0x18f4)
#7 0x4d0ab7 in htdbm_save
/home/root/sp/Dataset/Httpd/httpd_aflpp/support/htdbm.c:175:12
#8 0x4cd974 in main
/home/root/sp/Dataset/Httpd/httpd_aflpp/support/htdbm.c:453:19
#9 0x7f9fa2290082 in __libc_start_main
/build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
#10 0x41d58d in _start
(/home/root/sp/Fuzz/aflpp_fuzz/Httpd/document_group/mb/htdbm_1/htdbm+0x41d58d)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libdb-5.3.so+0x55a7b) in
__ham_insertpair
==2664561==ABORTING
Thank you for your attention and support.
Best regards,
Michael Zhang.
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