Gentoo FoundationGLSA-202209-01GNU Gzip, XZ Utils: Arbitrary file write
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.3%
Background
GNU Gzip is a popular data compression program. XZ Utils is free general-purpose data compression software with a high compression ratio.
Description
GNU Gzip and XZ Utils’ grep helpers do not sufficiently validate certain multi-line file names.
Impact
In some cases, writing to arbitrary files such as shell initialization files can be escalation to remote code execution.
Workaround
Ensuring only trusted input is passed to GNU Gzip and XZ Utils’ grep helpers minimizes the potential impact.
Resolution
All GNU Gzip users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/gzip-1.12"
All XZ Utils users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/xz-utils-5.2.5"
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Gentoo | any | all | app-arch/gzip | < 1.12 | UNKNOWN |
| Gentoo | any | all | app-arch/xz-utils | < 5.2.5 | UNKNOWN |
Related
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
0.007 Low
EPSS
Percentile
80.3%