Ubuntu.comUB:CVE-2019-12312CVE-2019-12312
5 Medium
CVSS2
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
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.005 Low
EPSS
Percentile
75.4%
In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon
restart. An attacker can trigger a NULL pointer dereference by initiating
an IKEv2 IKE_SA_INIT exchange, followed by a bogus INFORMATIONAL exchange
instead of the normallly expected IKE_AUTH exchange. This affects
send_v2N_spi_response_from_state() in programs/pluto/ikev2_send.c that will
then trigger a NULL pointer dereference leading to a restart of libreswan.
Notes
| Author | Note |
|---|---|
| ebarretto | libreswan only verion 3.27 affected |
References
www.iwantacve.cn/index.php/archives/218/
github.com/libreswan/libreswan/commit/7142d2c37d58cf024595a7549f0fb0d3946682f8
github.com/libreswan/libreswan/compare/9b1394e...3897683
github.com/libreswan/libreswan/issues/246
launchpad.net/bugs/cve/CVE-2019-12312
nvd.nist.gov/vuln/detail/CVE-2019-12312
security-tracker.debian.org/tracker/CVE-2019-12312
www.cve.org/CVERecord?id=CVE-2019-12312
Related
5 Medium
CVSS2
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
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.005 Low
EPSS
Percentile
75.4%