Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-27815

A flaw was found in the JFS filesystem code in the Linux Kernel which allows a local attacker with the ability to set extended attributes to panic the system, causing memory corruption or escalating privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.8, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 22 products from linux, from debian, from netapp and 19 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-05-26T13:15:07.647

Last Modified

2024-11-21T05:21:51.940

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.8 (HIGH)

CVSSv2 Vector

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

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

Exploitability Score

3.9

Impact Score

8.5

Weaknesses

Type: Secondary
CWE-119
Type: Secondary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	> 4.4.249	Yes
Operating System	linux	linux_kernel	< 4.9.249	Yes
Operating System	linux	linux_kernel	< 4.14.213	Yes
Operating System	linux	linux_kernel	< 4.19.164	Yes
Operating System	linux	linux_kernel	< 5.4.86	Yes
Operating System	linux	linux_kernel	< 5.10.4	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	netapp	h300s_firmware	-	Yes
Hardware	netapp	h300s	-	No
Operating System	netapp	h500s_firmware	-	Yes
Hardware	netapp	h500s	-	No
Operating System	netapp	h700s_firmware	-	Yes
Hardware	netapp	h700s	-	No
Operating System	netapp	h300e_firmware	-	Yes
Hardware	netapp	h300e	-	No
Operating System	netapp	h500e_firmware	-	Yes
Hardware	netapp	h500e	-	No
Operating System	netapp	h700e_firmware	-	Yes
Hardware	netapp	h700e	-	No
Operating System	netapp	h410s_firmware	-	Yes
Hardware	netapp	h410s	-	No
Operating System	netapp	h410c_firmware	-	Yes
Hardware	netapp	h410c	-	No
Operating System	netapp	aff_a250_firmware	-	Yes
Hardware	netapp	aff_a250	-	No
Operating System	netapp	fas500f_firmware	-	Yes
Hardware	netapp	fas500f	-	No

References

http://www.openwall.com/lists/oss-security/2020/11/30/5 Exploit, Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2020/12/28/1 Exploit, Mailing List, Patch, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C Issue Tracking ([email protected])
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c Patch, Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210702-0004/ Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4843 Third Party Advisory ([email protected])
https://www.openwall.com/lists/oss-security/2020/11/30/5%2C Mailing List ([email protected])
https://www.openwall.com/lists/oss-security/2020/12/28/1%2C Mailing List ([email protected])
http://www.openwall.com/lists/oss-security/2020/11/30/5 Exploit, Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2020/12/28/1 Exploit, Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C Issue Tracking (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210702-0004/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4843 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2020/11/30/5%2C Mailing List (af854a3a-2127-422b-91ae-364da2661108)
https://www.openwall.com/lists/oss-security/2020/12/28/1%2C Mailing List (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.