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cve[email protected]CVE-2021-27645
HistoryFeb 24, 2021 - 3:15 p.m.

CVE-2021-27645

2021-02-2415:15:13
CWE-415
[email protected]
web.nvd.nist.gov
170
10
cve
2021
27645
gnu c library
glibc
libc6
nameserver
caching daemon
nscd
double-free
crash
degraded service
denial of service
netgroup lookup
netgroupcache.

CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

2.5

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

5.9

Confidence

Low

EPSS

0.001

Percentile

17.3%

JSON

The nameserver caching daemon (nscd) in the GNU C Library (aka glibc or libc6) 2.29 through 2.33, when processing a request for netgroup lookup, may crash due to a double-free, potentially resulting in degraded service or Denial of Service on the local system. This is related to netgroupcache.c.

Affected configurations

NVD
Node
gnuglibcRange2.29–2.33
Node
fedoraprojectfedoraMatch33
OR
fedoraprojectfedoraMatch34
Node
debiandebian_linuxMatch10.0
VendorProductVersionCPE
gnuglibccpe:/a:gnu:glibc::::

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CVSS2

1.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

2.5

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

5.9

Confidence

Low

EPSS

0.001

Percentile

17.3%

JSON
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