5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.012 Low
EPSS
Percentile
83.4%
#############################################################################
Report ID: LMS-2014-06-16-6
CVE ID: CVE-2014-4611
Researcher Name: Don A. Bailey
Researcher Organization: Lab Mouse Security
Researcher Email: donb at securitymouse.com
Researcher Website: www.securitymouse.com
Vulnerability Status: Reported / No response
Vulnerability Embargo: Broken
Vulnerability Class: Integer Overflow
Vulnerability Effect: Memory Corruption
Vulnerability Impact: DoS, OOW, RCE
Vulnerability DoS Practicality: Practical
Vulnerability OOW Practicality: Practical
Vulnerability RCE Practicality: Untested
Vulnerability Criticality: High
Vulnerability Scope:
All versions of the LZ4 software:
https://code.google.com/p/lz4
Functions Affected:
lz4.c:LZ4_decompress_generic
Due to the design of the algorithm, an attacker can specify any desired
offset to a write pointer. The attacker can instrument the write in such
a way as to only write four bytes at a specified offset. Subsequent code
will allow the attacker to escape from the decompression algorithm without
further memory corruption. This may allow the attacker to overwrite
critical structures in memory that affect flow of execution. White DoS
and OOW are obvious side effects of this flaw, RCE with respect to this
flaw is untested.
An integer overflow can occur when processing any variant of a “literal run”
in the affected function.
Pending.