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ubuntucveUbuntu.comUB:CVE-2021-28903
HistoryMay 20, 2021 - 12:00 a.m.

CVE-2021-28903

2021-05-2000:00:00
ubuntu.com
ubuntu.com
10
libyang
denial of service
stack overflow
lyxml_parse_mem
lyxml_parse_elem
recursion limit
unix

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.7%

JSON

A stack overflow in libyang <= v1.0.225 can cause a denial of service
through function lyxml_parse_mem(). lyxml_parse_elem() function will be
called recursively, which will consume stack space and lead to crash.

Notes

Author Note
sbeattie fix introduces hard recursion limit
OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchlibyang< anyUNKNOWN
ubuntu22.04noarchlibyang< anyUNKNOWN

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SUSE: Security Advisory (SUSE-SU-2022:3245-1)
2022-09-13 00:00:00
openSUSE: Security Advisory for libyang (SUSE-SU-2022:3245-1)
2022-09-13 00:00:00
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Security update for libyang (important)
2022-09-12 00:00:00
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SUSE SLES15 Security Update : libyang (SUSE-SU-2022:3245-1)
2022-09-13 00:00:00
GLSA-202107-54 : libyang: Multiple vulnerabilities
2022-01-24 00:00:00
RHEL 8 : libyang (Unpatched Vulnerability)
2024-06-03 00:00:00
gentoo
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libyang: Multiple vulnerabilities
2021-07-24 00:00:00

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

45.7%

JSON
Related for UB:CVE-2021-28903
cvelist1osv1alpinelinux1veracode1prion1redhatcve1debiancve1nvd1cve1openvas2suse1nessus4gentoo1