Vulnerability Report

CVE-2020-8835

Title: Netapp Hci Management Node Memory Corruption

Memory Corruption

Proof Of Concept

PoC Available for CVE-2020-8835

CWE Category CWE-125
Published Date Apr 02, 2020
Modified Date Nov 21, 2024
Exploit Status Available
Score 7.8 CVSS v3.1
Exploit Probability (EPSS)
23.27%

Vulnerability Summary

CVE-2020-8835: In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)

Impacted Vendors

S
sercomm 1
P
paxtechnology 1
C
cisco 1
N
netapp 24
M
marel 1

Reference Links

http://www.openwall.com/lists/oss-security/2021/07/20/1 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/ https://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/ https://security.netapp.com/advisory/ntap-20200430-0004/ https://usn.ubuntu.com/4313-1/ https://usn.ubuntu.com/usn/usn-4313-1 https://www.openwall.com/lists/oss-security/2020/03/30/3 https://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-results http://www.openwall.com/lists/oss-security/2021/07/20/1 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f2d67fec0b43edce8c416101cdc52e71145b5fef https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7OONYGMSYBEFHLHZJK3GOI5Z553G4LD/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TF4PQZBEPNXDSK5DOBMW54OCLP25FTCD/ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YXBWSHZ6DJIZVXKXGZPK6QPFCY7VKZEG/ https://lore.kernel.org/bpf/20200330160324.15259-1-daniel%40iogearbox.net/T/ https://security.netapp.com/advisory/ntap-20200430-0004/ https://usn.ubuntu.com/4313-1/ https://usn.ubuntu.com/usn/usn-4313-1 https://www.openwall.com/lists/oss-security/2020/03/30/3 https://www.thezdi.com/blog/2020/3/19/pwn2own-2020-day-one-results
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.8
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v3.1
Source Entity [email protected]
Severity HIGH
7.8
Attack Vector
LOCAL
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.2
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:L/Au:N/C:C/I:C/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-8835 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/snappyJack/Rick_write_exp_CVE-2020-8835
View Code
GitHub https://github.com/digamma-ai/CVE-2020-8835-verification
View Code
GitHub https://github.com/KashaMalaga/cve2020-8835
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected Stack

No specific products linked.