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nvd[email protected]NVD:CVE-2021-26720
HistoryFeb 17, 2021 - 10:15 p.m.

CVE-2021-26720

2021-02-1722:15:12
CWE-59
[email protected]
web.nvd.nist.gov
6
cve-2021-26720
avahi-daemon
debian
symlink attack
denial of service

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

5.1%

JSON

avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product.

Affected configurations

Nvd
Node
avahiavahiRange≤0.8-4
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0
VendorProductVersionCPE
avahiavahi*cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debiandebian_linux10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Related

prion 1
nessus 7
openvas 6
cvelist 1
osv 4
alpinelinux 1
cbl_mariner 2
cve 1
rosalinux 2
ubuntucve 1
suse 2
debiancve 1
debian 1
prion
prion
Code injection
2021-02-17 22:15:00
nessus
nessus
openSUSE Security Update : avahi (openSUSE-2021-370)
2021-03-05 00:00:00
SUSE SLES12 Security Update : avahi (SUSE-SU-2021:0563-1)
2021-02-24 00:00:00
CBL Mariner 2.0 Security Update: avahi (CVE-2021-26720)
2024-07-03 00:00:00
openvas
openvas
SUSE: Security Advisory (SUSE-SU-2021:0551-1)
2021-06-09 00:00:00
SUSE: Security Advisory (SUSE-SU-2021:0563-1)
2021-04-19 00:00:00
openSUSE: Security Advisory for avahi (openSUSE-SU-2021:0370-1)
2021-04-16 00:00:00
cvelist
cvelist
CVE-2021-26720
2021-02-17 21:19:26
osv
osv
CGA-wh9g-9xfr-658j
2024-06-06 12:29:46
CVE-2021-26720
2021-02-17 22:15:12
avahi - security update
2022-06-07 00:00:00
alpinelinux
alpinelinux
CVE-2021-26720
2021-02-17 22:15:12
cbl_mariner
cbl_mariner
CVE-2021-26720 affecting package avahi for versions less than 0.8-1
2024-03-19 17:21:46
CVE-2021-26720 affecting package avahi for versions less than 0.8-1
2022-04-26 19:39:28
cve
cve
CVE-2021-26720
2021-02-17 22:15:12
rosalinux
rosalinux
Advisory ROSA-SA-2021-1807
2021-07-02 16:32:18
Advisory ROSA-SA-2024-2455
2024-07-23 11:22:51
ubuntucve
ubuntucve
CVE-2021-26720
2021-02-17 00:00:00
suse
suse
Security update for avahi (moderate)
2021-03-03 00:00:00
Security update for avahi (important)
2021-07-11 00:00:00
debiancve
debiancve
CVE-2021-26720
2021-02-17 22:15:12
debian
debian
[SECURITY] [DLA 3047-1] avahi security update
2022-06-07 18:23:35

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0

Percentile

5.1%

JSON
Related for NVD:CVE-2021-26720
prion1nessus7openvas6cvelist1osv4alpinelinux1cbl_mariner2cve1rosalinux2ubuntucve1suse2debiancve1debian1