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amazonAmazonALAS2-2021-1698
HistoryAug 04, 2021 - 8:32 p.m.

Important: xstream

2021-08-0420:32:00
alas.aws.amazon.com
22

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

8.7 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

0.048 Low

EPSS

Percentile

92.6%

Issue Overview:

A flaw was found in XStream. By manipulating the processed input stream, a remote attacker may be able to obtain sufficient rights to execute commands. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-29505)

Affected Packages:

xstream

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 xstream to update your system.

New Packages:

noarch:  
    xstream-1.3.1-14.amzn2.noarch  
    xstream-javadoc-1.3.1-14.amzn2.noarch  
  
src:  
    xstream-1.3.1-14.amzn2.src  

Additional References

Red Hat: CVE-2021-29505

Mitre: CVE-2021-29505

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

8.7 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

0.048 Low

EPSS

Percentile

92.6%