High severity · published May 26, 2021
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…
7.8
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
after 4.4.249 and later; 4.5 before 4.9.249; 4.10 before 4.14.213; 4.15 before 4.19.164; 4.20 before 5.4.86; 5.5 before 5.10.4 · source: NVD
AA
Aff A250 Firmware · Netapp
All versions, or not specified · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
FF
Fas500f Firmware · Netapp
All versions, or not specified · source: NVD
HF
H300e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H300s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410c Firmware · Netapp
All versions, or not specified · source: NVD
HF
H410s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H500s Firmware · Netapp
All versions, or not specified · source: NVD
HF
H700e Firmware · Netapp
All versions, or not specified · source: NVD
HF
H700s Firmware · Netapp
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27815
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27815
Exploit
http://www.openwall.com/lists/oss-security/2020/11/30/5
Exploit
http://www.openwall.com/lists/oss-security/2020/12/28/1
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1897668%2C
Patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c61b3e4839007668360ed8b87d7da96d2e59fc6c
Mailing List
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
Mailing List
https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
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