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amazonAmazonALAS2-2020-1477
HistoryAug 18, 2020 - 7:49 p.m.

Low: gettext

2020-08-1819:49:00
alas.aws.amazon.com
13

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.5 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.025 Low

EPSS

Percentile

90.0%

Issue Overview:

An issue was discovered in GNU gettext 0.19.8. There is a double free in default_add_message in read-catalog.c, related to an invalid free in po_gram_parse in po-gram-gen.y, as demonstrated by lt-msgfmt. (CVE-2018-18751)

Affected Packages:

gettext

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 gettext to update your system.

New Packages:

aarch64:  
    gettext-0.19.8.1-3.amzn2.aarch64  
    gettext-devel-0.19.8.1-3.amzn2.aarch64  
    gettext-libs-0.19.8.1-3.amzn2.aarch64  
    gettext-debuginfo-0.19.8.1-3.amzn2.aarch64  
  
i686:  
    gettext-0.19.8.1-3.amzn2.i686  
    gettext-devel-0.19.8.1-3.amzn2.i686  
    gettext-libs-0.19.8.1-3.amzn2.i686  
    gettext-debuginfo-0.19.8.1-3.amzn2.i686  
  
noarch:  
    gettext-common-devel-0.19.8.1-3.amzn2.noarch  
    emacs-gettext-0.19.8.1-3.amzn2.noarch  
  
src:  
    gettext-0.19.8.1-3.amzn2.src  
  
x86_64:  
    gettext-0.19.8.1-3.amzn2.x86_64  
    gettext-devel-0.19.8.1-3.amzn2.x86_64  
    gettext-libs-0.19.8.1-3.amzn2.x86_64  
    gettext-debuginfo-0.19.8.1-3.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-18751

Mitre: CVE-2018-18751

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.5 High

AI Score

Confidence

High

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.025 Low

EPSS

Percentile

90.0%