Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-33909

fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.

Published

2021-07-20T19:15:09.747

Last Modified

2024-11-21T06:09:45.353

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-190
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 3.13	Yes
Operating System	linux	linux_kernel	< 4.4.276	Yes
Operating System	linux	linux_kernel	< 4.9.276	Yes
Operating System	linux	linux_kernel	< 4.14.240	Yes
Operating System	linux	linux_kernel	< 4.19.198	Yes
Operating System	linux	linux_kernel	< 5.4.134	Yes
Operating System	linux	linux_kernel	< 5.10.52	Yes
Operating System	linux	linux_kernel	< 5.12.19	Yes
Operating System	linux	linux_kernel	< 5.13.4	Yes
Operating System	fedoraproject	fedora	34	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Application	netapp	hci_management_node	-	Yes
Application	netapp	solidfire	-	Yes
Application	oracle	communications_session_border_controller	8.2	Yes
Application	oracle	communications_session_border_controller	8.3	Yes
Application	oracle	communications_session_border_controller	8.4	Yes
Application	oracle	communications_session_border_controller	9.0	Yes
Operating System	sonicwall	sma1000_firmware	≤ 12.4.2-02044	Yes
Hardware	sonicwall	sma1000	-	No

References

http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html Exploit, Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry ([email protected])
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Third Party Advisory, VDB Entry ([email protected])
http://www.openwall.com/lists/oss-security/2021/07/22/7 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/08/25/10 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory ([email protected])
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory ([email protected])
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ ([email protected])
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210819-0004/ Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4941 Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2021/07/20/1 Exploit, Mailing List, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/163621/Sequoia-A-Deep-Root-In-Linuxs-Filesystem-Layer.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/163671/Kernel-Live-Patch-Security-Notice-LSN-0079-1.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/164155/Kernel-Live-Patch-Security-Notice-LSN-0081-1.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/07/22/7 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/08/25/10 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/torvalds/linux/commit/8cae8cd89f05f6de223d63e6d15e31c8ba9cf53b Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z4UHHIGISO3FVRF4CQNJS4IKA25ATSFU/ (af854a3a-2127-422b-91ae-364da2661108)
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0015 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210819-0004/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4941 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2021/07/20/1 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)