PT-2021-8984 · Nbdkit+2 · Nbdkit+2

Doran Moppert + 1 · Published 2020-03-31 · Updated 2021-03-24 · CVE-2019-14850

Positive Technologies (AI Summary)

CVSS v3.1

3.7

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions nbdkit versions 1.12.7, 1.14.1, 1.15.1

Description A denial of service issue was discovered in nbdkit. An attacker could connect to the nbdkit service, causing it to perform a large amount of work in initializing backend plugins by simply opening a connection to the service. This could cause resource consumption and degradation of service in nbdkit, depending on the plugins configured on the server-side.

Recommendations For version 1.12.7, update to a version that fixes this issue. For version 1.14.1, update to a version that fixes this issue. For version 1.15.1, update to a version that fixes this issue. As a temporary workaround, consider restricting access to the nbdkit service to minimize the risk of exploitation.

Exploit

Fix

DoS

Weakness Enumeration

CWE-406

Related Identifiers

CESA-2020_1167

CVE-2019-14850

RHSA-2020:1167

RHSA-2020_1167

Affected Products

Centos

Red Hat

Nbdkit

References · 17

• 🔥 https://redhat.com/archives/libguestfs/2019-September/msg00084.html · Exploit
• https://ubuntu.com/security/CVE-2019-14850 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-14850 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-14850 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-14850 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=1757258 · Patch
• https://linux.oracle.com/errata/ELSA-2020-1167.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-14850 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-14850 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-14850 · Security Note
• https://github.com/libguestfs/nbdkit/commit/a6b88b195a959b17524d1c8353fd425d4891dc5f · Note
• https://github.com/libguestfs/nbdkit/commit/22b30adb796bb6dca264a38598f80b8a234ff978 · Note
• https://github.com/libguestfs/nbdkit/commit/e06cde00659ff97182173d0e33fff784041bcb4a · Note
• https://github.com/libguestfs/nbdkit/commit/bf0d61883a2f02f4388ec10dc92d4c61c093679e · Note
• https://github.com/libguestfs/nbdkit/commit/c05686f9577fa91b6a3a4d8c065954ca6fc3fd62 · Note