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amazonAmazonALAS-2017-911
HistoryOct 12, 2017 - 7:41 p.m.

Important: nss

2017-10-1219:41:00
alas.aws.amazon.com
21

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.01

Percentile

83.7%

Issue Overview:

Potential use-after-free in TLS 1.2 server when verifying client authentication:
A use-after-free flaw was found in the TLS 1.2 implementation in the NSS library when client authentication was used. A malicious client could use this flaw to cause an application compiled against NSS to crash or, potentially, execute arbitrary code with the permission of the user running the application. (CVE-2017-7805)

Affected Packages:

nss

Issue Correction:
Run yum update nss to update your system.

New Packages:

i686:  
    nss-tools-3.28.4-12.80.amzn1.i686  
    nss-debuginfo-3.28.4-12.80.amzn1.i686  
    nss-3.28.4-12.80.amzn1.i686  
    nss-sysinit-3.28.4-12.80.amzn1.i686  
    nss-pkcs11-devel-3.28.4-12.80.amzn1.i686  
    nss-devel-3.28.4-12.80.amzn1.i686  
  
src:  
    nss-3.28.4-12.80.amzn1.src  
  
x86_64:  
    nss-pkcs11-devel-3.28.4-12.80.amzn1.x86_64  
    nss-devel-3.28.4-12.80.amzn1.x86_64  
    nss-3.28.4-12.80.amzn1.x86_64  
    nss-debuginfo-3.28.4-12.80.amzn1.x86_64  
    nss-sysinit-3.28.4-12.80.amzn1.x86_64  
    nss-tools-3.28.4-12.80.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-7805

Mitre: CVE-2017-7805

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.01

Percentile

83.7%