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redhatRedHatRHSA-2023:2633
HistoryMay 09, 2023 - 10:14 a.m.

(RHSA-2023:2633) Moderate: libreswan security update

2023-05-0910:14:07
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4
libreswan
ipsec
ike
linux
cryptography
authentication
encryption
vpn
dos
ts payload
selector length
cve-2023-23009
cvss
references
security fix

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.5

Confidence

Low

EPSS

0.002

Percentile

53.6%

Libreswan is an implementation of IPsec and IKE for Linux. IPsec is the Internet Protocol Security and uses strong cryptography to provide both authentication and encryption services. These services allow you to build secure tunnels through untrusted networks such as virtual private network (VPN).

Security Fix(es):

  • libreswan: remote DoS via crafted TS payload with an incorrect selector length (CVE-2023-23009)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.5

Confidence

Low

EPSS

0.002

Percentile

53.6%