Detections
Analytics
Debian DLA-2557-1 : linux-4.19 security update
high Nessus Plugin ID 146512
Language:
Synopsis
The remote Debian host is missing a security update.Description
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.CVE-2020-27815
A flaw was reported in the JFS filesystem code allowing a local attacker with the ability to set extended attributes to cause a denial of service.
CVE-2020-27825
Adam 'pi3' Zabrocki reported a use-after-free flaw in the ftrace ring buffer resizing logic due to a race condition, which could result in denial of service or information leak.
CVE-2020-27830
Shisong Qin reported a NULL pointer dereference flaw in the Speakup screen reader core driver.
CVE-2020-28374
David Disseldorp discovered that the LIO SCSI target implementation performed insufficient checking in certain XCOPY requests. An attacker with access to a LUN and knowledge of Unit Serial Number assignments can take advantage of this flaw to read and write to any LIO backstore, regardless of the SCSI transport settings.
CVE-2020-29568 (XSA-349)
Michael Kurth and Pawel Wieczorkiewicz reported that frontends can trigger OOM in backends by updating a watched path.
CVE-2020-29569 (XSA-350)
Olivier Benjamin and Pawel Wieczorkiewicz reported a use-after-free flaw which can be triggered by a block frontend in Linux blkback. A misbehaving guest can trigger a dom0 crash by continuously connecting / disconnecting a block frontend.
CVE-2020-29660
Jann Horn reported a locking inconsistency issue in the tty subsystem which may allow a local attacker to mount a read-after-free attack against TIOCGSID.
CVE-2020-29661
Jann Horn reported a locking issue in the tty subsystem which can result in a use-after-free. A local attacker can take advantage of this flaw for memory corruption or privilege escalation.
CVE-2020-36158
A buffer overflow flaw was discovered in the mwifiex WiFi driver which could result in denial of service or the execution of arbitrary code via a long SSID value.
CVE-2021-3347
It was discovered that PI futexes have a kernel stack use-after-free during fault handling. An unprivileged user could use this flaw to crash the kernel (resulting in denial of service) or for privilege escalation.
CVE-2021-20177
A flaw was discovered in the Linux implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) can take advantage of this flaw to cause a kernel panic when inserting iptables rules.
For Debian 9 stretch, these problems have been fixed in version 4.19.171-2~deb9u1.
We recommend that you upgrade your linux-4.19 packages.
For the detailed security status of linux-4.19 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/linux-4.19
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected packages.See Also
https://lists.debian.org/debian-lts-announce/2021/02/msg00018.html
https://packages.debian.org/source/stretch/linux-4.19
https://security-tracker.debian.org/tracker/source-package/linux-4.19
Plugin Details
Severity: High
ID: 146512
File Name: debian_DLA-2557.nasl
Version: 1.4
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 2/16/2021
Updated: 1/22/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.3
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2021-3347
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.9
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
CVSS Score Source: CVE-2020-29569
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all-armel, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-686-pae, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-marvell, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-686, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-armmp-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-rt-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-common, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-686-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-686, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all-i386, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-armmp, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-armmp, p-cpe:/a:debian:debian_linux:linux-kbuild-4.19, p-cpe:/a:debian:debian_linux:linux-source-4.19, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-rpi, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-armmp-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-cloud-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-marvell-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-armmp, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all-armhf, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-rt-armmp, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-rt-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-686-pae-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-amd64, p-cpe:/a:debian:debian_linux:linux-perf-4.19, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-arm64-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-common-rt, p-cpe:/a:debian:debian_linux:linux-support-4.19.0-0.bpo.10, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-armmp-lpae, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rpi, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rpi-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-rt-686-pae, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-cloud-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-armmp-lpae-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-686-pae-dbg, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-all-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-armmp-lpae, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-cloud-amd64, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-686-pae, p-cpe:/a:debian:debian_linux:linux-doc-4.19, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-marvell, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-arm64-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-amd64-dbg, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-686-pae, p-cpe:/a:debian:debian_linux:linux-image-4.19.0-0.bpo.10-rt-arm64, p-cpe:/a:debian:debian_linux:linux-headers-4.19.0-0.bpo.10-amd64, p-cpe:/a:debian:debian_linux:linux-config-4.19
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 2/12/2021
Vulnerability Publication Date: 12/9/2020
Reference Information
CVE: CVE-2020-27815, CVE-2020-27825, CVE-2020-27830, CVE-2020-28374, CVE-2020-29568, CVE-2020-29569, CVE-2020-29660, CVE-2020-29661, CVE-2020-36158, CVE-2021-20177, CVE-2021-3347