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OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
Affected range
<1.2.0-rc.1
Fixed version
1.2.0-rc.1
CVSS Score
7.2
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Description
Withdrawn Advisory
This advisory has been withdrawn because it was incorrectly attributed to runc. Please see the issue here for more information.
Original Description
A flaw was found in cri-o, where an arbitrary systemd property can be injected via a Pod annotation. Any user who can create a pod with an arbitrary annotation may perform an arbitrary action on the host system. This issue has its root in how runc handles Config Annotations lists.
Race Condition Enabling Link Following
Affected range
<1.1.14
Fixed version
1.1.14
CVSS Score
3.6
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
Description
Impact
runc 1.1.13 and earlier as well as 1.2.0-rc2 and earlier can be tricked into
creating empty files or directories in arbitrary locations in the host
filesystem by sharing a volume between two containers and exploiting a race
with os.MkdirAll. While this can be used to create empty files, existing
files will not be truncated.
An attacker must have the ability to start containers using some kind of custom
volume configuration. Containers using user namespaces are still affected, but
the scope of places an attacker can create inodes can be significantly reduced.
Sufficiently strict LSM policies (SELinux/Apparmor) can also in principle block
this attack -- we suspect the industry standard SELinux policy may restrict
this attack's scope but the exact scope of protection hasn't been analysed.
This is exploitable using runc directly as well as through Docker and
Kubernetes.
The CVSS score for this vulnerability is
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N (Low severity, 3.6).
Workarounds
Using user namespaces restricts this attack fairly significantly such that the
attacker can only create inodes in directories that the remapped root
user/group has write access to. Unless the root user is remapped to an actual
user on the host (such as with rootless containers that don't use
/etc/sub[ug]id), this in practice means that an attacker would only be able to
create inodes in world-writable directories.
A strict enough SELinux or AppArmor policy could in principle also restrict the
scope if a specific label is applied to the runc runtime, though we haven't
thoroughly tested to what extent the standard existing policies block this
attack nor what exact policies are needed to sufficiently restrict this attack.
Improper Handling of Highly Compressed Data (Data Amplification)
Affected range
<=2.6.0
Fixed version
Not Fixed
CVSS Score
4.3
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Description
Impact
An attacker could send a JWE containing compressed data that used large amounts of memory and CPU when decompressed by Decrypt or DecryptMulti. Those functions now return an error if the decompressed data would exceed 250kB or 10x the compressed size (whichever is larger). Thanks to Enze Wang@Alioth and Jianjun Chen@Zhongguancun Lab (@zer0yu and @chenjj) for reporting.
Patches
The problem is fixed in the following packages and versions:
github.com/go-jose/go-jose/v4 version 4.0.1
github.com/go-jose/go-jose/v3 version 3.0.3
gopkg.in/go-jose/go-jose.v2 version 2.6.3
The problem will not be fixed in the following package because the package is archived:
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This PR contains the following updates:
0.25.0->0.26.0Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
Release Notes
kcp-dev/kcp (kcp-dev/kcp)
v0.26.0Compare Source
Changes by Kind
API Change
Feature
internal.kcp.io/inactiveannotation on logical clusters to forbid any access beyond logical clusters. (#3152, @RedbackThomson)Performance & Optimizations
LogicalClusters. (#3119, @sttts)--root-directory=""is set (#3158, @embik)Dependencies
Added
Changed
a9213ee→f3d0a9cb75ee88→f48c80be35e4ccb8732ec→5315273b8732ec→f6361c83b25d92→18e509b6ce0bf3→ v0.17.26ce0bf3→ v5.4.26ce0bf3→ v0.17.1Removed
Configuration
📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
This PR has been generated by Renovate Bot.