Debian LTS: Security Advisory for linux-4.19 (DLA-2417-1)

Published: 2020-10-29 04:00:10
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:S/C:P/I:P/A:C

Summary:
The remote host is missing an update for the 'linux-4.19' Linux Distribution Package(s) announced via the DLA-2417-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Several vulnerabilities have been discovered in the Linux kernel that may lead to the execution of arbitrary code, privilege escalation, denial of service or information leaks. CVE-2020-12351 Andy Nguyen discovered a flaw in the Bluetooth implementation in the way L2CAP packets with A2MP CID are handled. A remote attacker in short distance knowing the victim's Bluetooth device address can send a malicious l2cap packet and cause a denial of service or possibly arbitrary code execution with kernel privileges. CVE-2020-12352 Andy Nguyen discovered a flaw in the Bluetooth implementation. Stack memory is not properly initialised when handling certain AMP packets. A remote attacker in short distance knowing the victim's Bluetooth device address address can retrieve kernel stack information. CVE-2020-25211 A flaw was discovered in netfilter subsystem. A local attacker able to inject conntrack Netlink configuration can cause a denial of service. CVE-2020-25643 ChenNan Of Chaitin Security Research Lab discovered a flaw in the hdlc_ppp module. Improper input validation in the ppp_cp_parse_cr() function may lead to memory corruption and information disclosure. CVE-2020-25645 A flaw was discovered in the interface driver for GENEVE encapsulated traffic when combined with IPsec. If IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel, tunneled data isn't correctly routed over the encrypted link and sent unencrypted instead.

Affected Versions:
'linux-4.19' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 9 stretch, these problems have been fixed in version 4.19.152-1~deb9u1. We recommend that you upgrade your linux-4.19 Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2020-12351
https://nvd.nist.gov/vuln/detail/CVE-2020-12352
https://nvd.nist.gov/vuln/detail/CVE-2020-25211
https://nvd.nist.gov/vuln/detail/CVE-2020-25643
https://nvd.nist.gov/vuln/detail/CVE-2020-25645

References:

https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html
https://security-tracker.debian.org/tracker/DLA-2417-1
https://bugs.debian.org/908712

Severity
High
CVSS Score
7.5
Published
2020-10-29
Modified
2020-10-29
Category
Debian Local Security Checks

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