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amazonAmazonALAS2-2019-1357
HistoryNov 04, 2019 - 10:40 p.m.

Low: zziplib

2019-11-0422:40:00
alas.aws.amazon.com
21

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.005

Percentile

76.8%

Issue Overview:

An issue was discovered in ZZIPlib through 0.13.69. There is a memory leak triggered in the function __zzip_parse_root_directory in zip.c, which will lead to a denial of service attack.(CVE-2018-16548)

In ZZIPlib 0.13.67, there is a bus error caused by loading of a misaligned address (when handling disk64_trailer local entries) in __zzip_fetch_disk_trailer (zzip/zip.c). Remote attackers could leverage this vulnerability to cause a denial of service via a crafted zip file.(CVE-2018-6541)

Affected Packages:

zziplib

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 zziplib to update your system.

New Packages:

aarch64:  
    zziplib-0.13.62-11.amzn2.aarch64  
    zziplib-utils-0.13.62-11.amzn2.aarch64  
    zziplib-devel-0.13.62-11.amzn2.aarch64  
    zziplib-debuginfo-0.13.62-11.amzn2.aarch64  
  
i686:  
    zziplib-0.13.62-11.amzn2.i686  
    zziplib-utils-0.13.62-11.amzn2.i686  
    zziplib-devel-0.13.62-11.amzn2.i686  
    zziplib-debuginfo-0.13.62-11.amzn2.i686  
  
src:  
    zziplib-0.13.62-11.amzn2.src  
  
x86_64:  
    zziplib-0.13.62-11.amzn2.x86_64  
    zziplib-utils-0.13.62-11.amzn2.x86_64  
    zziplib-devel-0.13.62-11.amzn2.x86_64  
    zziplib-debuginfo-0.13.62-11.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-16548, CVE-2018-6541

Mitre: CVE-2018-16548, CVE-2018-6541

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

6.2

Confidence

High

EPSS

0.005

Percentile

76.8%