Lucene search

K
amazonAmazonALAS2-2022-1782
HistoryApr 25, 2022 - 10:56 p.m.

Important: gzip, xz

2022-04-2522:56:00
alas.aws.amazon.com
14

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

8.8 High

AI Score

Confidence

High

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

0.005 Low

EPSS

Percentile

76.3%

Issue Overview:

An arbitrary file write vulnerability was found in GNU gzip’s zgrep utility. When zgrep is applied on the attacker’s chosen file name (for example, a crafted file name), this can overwrite an attacker’s content to an arbitrary attacker-selected file. This flaw occurs due to insufficient validation when processing filenames with two or more newlines where selected content and the target file names are embedded in crafted multi-line file names. This flaw allows a remote, low privileged attacker to force zgrep to write arbitrary files on the system. (CVE-2022-1271)

Affected Packages:

gzip, xz

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update gzip to update your system.
Run yum update xz to update your system.

New Packages:

aarch64:  
    gzip-1.5-10.amzn2.0.1.aarch64  
    gzip-debuginfo-1.5-10.amzn2.0.1.aarch64  
    xz-5.2.2-1.amzn2.0.3.aarch64  
    xz-libs-5.2.2-1.amzn2.0.3.aarch64  
    xz-compat-libs-5.2.2-1.amzn2.0.3.aarch64  
    xz-devel-5.2.2-1.amzn2.0.3.aarch64  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.aarch64  
    xz-debuginfo-5.2.2-1.amzn2.0.3.aarch64  
  
i686:  
    gzip-1.5-10.amzn2.0.1.i686  
    gzip-debuginfo-1.5-10.amzn2.0.1.i686  
    xz-5.2.2-1.amzn2.0.3.i686  
    xz-libs-5.2.2-1.amzn2.0.3.i686  
    xz-compat-libs-5.2.2-1.amzn2.0.3.i686  
    xz-devel-5.2.2-1.amzn2.0.3.i686  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.i686  
    xz-debuginfo-5.2.2-1.amzn2.0.3.i686  
  
src:  
    gzip-1.5-10.amzn2.0.1.src  
    xz-5.2.2-1.amzn2.0.3.src  
  
x86_64:  
    gzip-1.5-10.amzn2.0.1.x86_64  
    gzip-debuginfo-1.5-10.amzn2.0.1.x86_64  
    xz-5.2.2-1.amzn2.0.3.x86_64  
    xz-libs-5.2.2-1.amzn2.0.3.x86_64  
    xz-compat-libs-5.2.2-1.amzn2.0.3.x86_64  
    xz-devel-5.2.2-1.amzn2.0.3.x86_64  
    xz-lzma-compat-5.2.2-1.amzn2.0.3.x86_64  
    xz-debuginfo-5.2.2-1.amzn2.0.3.x86_64  

Additional References

Red Hat: CVE-2022-1271

Mitre: CVE-2022-1271

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

8.8 High

AI Score

Confidence

High

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

0.005 Low

EPSS

Percentile

76.3%