CVE-2015-1593
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
5.6 Medium
AI Score
Confidence
High
0.008 Low
EPSS
Percentile
81.5%
The stack randomization feature in the Linux kernel before 3.19.1 on 64-bit platforms uses incorrect data types for the results of bitwise left-shift operations, which makes it easier for attackers to bypass the ASLR protection mechanism by predicting the address of the top of the stack, related to the randomize_stack_top function in fs/binfmt_elf.c and the stack_maxrandom_size function in arch/x86/mm/mmap.c.
Affected configurations
References
git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=4e7c22d447bb6d7e37bfe39ff658486ae78e8d77
hmarco.org/bugs/linux-ASLR-integer-overflow.html
lists.opensuse.org/opensuse-security-announce/2015-04/msg00009.html
lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
rhn.redhat.com/errata/RHSA-2015-1137.html
rhn.redhat.com/errata/RHSA-2015-1138.html
rhn.redhat.com/errata/RHSA-2015-1221.html
www.debian.org/security/2015/dsa-3170
www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.19.1
www.openwall.com/lists/oss-security/2015/02/13/13
www.securityfocus.com/bid/72607
www.ubuntu.com/usn/USN-2560-1
www.ubuntu.com/usn/USN-2561-1
www.ubuntu.com/usn/USN-2562-1
www.ubuntu.com/usn/USN-2563-1
www.ubuntu.com/usn/USN-2564-1
www.ubuntu.com/usn/USN-2565-1
access.redhat.com/errata/RHSA-2019:3517
bugzilla.redhat.com/show_bug.cgi?id=1192519
github.com/torvalds/linux/commit/4e7c22d447bb6d7e37bfe39ff658486ae78e8d77
lkml.org/lkml/2015/1/7/811
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:P/I:N/A:N
5.6 Medium
AI Score
Confidence
High
0.008 Low
EPSS
Percentile
81.5%