medium
5.8
CWE
189
Advisory Published
CVE Published
Updated

CVE-2013-4345

First published: Fri Sep 13 2013(Updated: )

A flaw was found in the way ansi cprng implementation in the Linux kernel processed non-block size aligned requests. If several small requests are made that are less than the instances block size, the remainder for loop code doesn't increment rand_data_valid in the last iteration, meaning that the last bytes in the rand_data buffer gets reused on the subsequent smaller-than-a-block request for random data. Acknowledgements: Red Hat would like to thank Stephan Mueller for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
debian/linux
5.10.223-1
5.10.226-1
6.1.123-1
6.1.128-1
6.12.12-1
6.12.15-1
Linux Kernel<=3.11.4
Linux Kernel=3.0-rc1
Linux Kernel=3.0-rc2
Linux Kernel=3.0-rc3
Linux Kernel=3.0-rc4
Linux Kernel=3.0-rc5
Linux Kernel=3.0-rc6
Linux Kernel=3.0-rc7
Linux Kernel=3.0.1
Linux Kernel=3.0.2
Linux Kernel=3.0.3
Linux Kernel=3.0.4
Linux Kernel=3.0.5
Linux Kernel=3.0.6
Linux Kernel=3.0.7
Linux Kernel=3.0.8
Linux Kernel=3.0.9
Linux Kernel=3.0.10
Linux Kernel=3.0.11
Linux Kernel=3.0.12
Linux Kernel=3.0.13
Linux Kernel=3.0.14
Linux Kernel=3.0.15
Linux Kernel=3.0.16
Linux Kernel=3.0.17
Linux Kernel=3.0.18
Linux Kernel=3.0.19
Linux Kernel=3.0.20
Linux Kernel=3.0.21
Linux Kernel=3.0.22
Linux Kernel=3.0.23
Linux Kernel=3.0.24
Linux Kernel=3.0.25
Linux Kernel=3.0.26
Linux Kernel=3.0.27
Linux Kernel=3.0.28
Linux Kernel=3.0.29
Linux Kernel=3.0.30
Linux Kernel=3.0.31
Linux Kernel=3.0.32
Linux Kernel=3.0.33
Linux Kernel=3.0.34
Linux Kernel=3.0.35
Linux Kernel=3.0.36
Linux Kernel=3.0.37
Linux Kernel=3.0.38
Linux Kernel=3.0.39
Linux Kernel=3.0.40
Linux Kernel=3.0.41
Linux Kernel=3.0.42
Linux Kernel=3.0.43
Linux Kernel=3.0.44
Linux Kernel=3.0.45
Linux Kernel=3.0.46
Linux Kernel=3.0.47
Linux Kernel=3.0.48
Linux Kernel=3.0.49
Linux Kernel=3.0.50
Linux Kernel=3.0.51
Linux Kernel=3.0.52
Linux Kernel=3.0.53
Linux Kernel=3.0.54
Linux Kernel=3.0.55
Linux Kernel=3.0.56
Linux Kernel=3.0.57
Linux Kernel=3.0.58
Linux Kernel=3.0.59
Linux Kernel=3.0.60
Linux Kernel=3.0.61
Linux Kernel=3.0.62
Linux Kernel=3.0.63
Linux Kernel=3.0.64
Linux Kernel=3.0.65
Linux Kernel=3.0.66
Linux Kernel=3.0.67
Linux Kernel=3.0.68
Linux Kernel=3.1
Linux Kernel=3.1-rc1
Linux Kernel=3.1-rc2
Linux Kernel=3.1-rc3
Linux Kernel=3.1-rc4
Linux Kernel=3.1.1
Linux Kernel=3.1.2
Linux Kernel=3.1.3
Linux Kernel=3.1.4
Linux Kernel=3.1.5
Linux Kernel=3.1.6
Linux Kernel=3.1.7
Linux Kernel=3.1.8
Linux Kernel=3.1.9
Linux Kernel=3.1.10
Linux Kernel=3.2
Linux Kernel=3.2
Linux Kernel=3.2-rc2
Linux Kernel=3.2-rc3
Linux Kernel=3.2-rc4
Linux Kernel=3.2-rc5
Linux Kernel=3.2-rc6
Linux Kernel=3.2-rc7
Linux Kernel=3.2.1
Linux Kernel=3.2.2
Linux Kernel=3.2.3
Linux Kernel=3.2.4
Linux Kernel=3.2.5
Linux Kernel=3.2.6
Linux Kernel=3.2.7
Linux Kernel=3.2.8
Linux Kernel=3.2.9
Linux Kernel=3.2.10
Linux Kernel=3.2.11
Linux Kernel=3.2.12
Linux Kernel=3.2.13
Linux Kernel=3.2.14
Linux Kernel=3.2.15
Linux Kernel=3.2.16
Linux Kernel=3.2.17
Linux Kernel=3.2.18
Linux Kernel=3.2.19
Linux Kernel=3.2.20
Linux Kernel=3.2.21
Linux Kernel=3.2.22
Linux Kernel=3.2.23
Linux Kernel=3.2.24
Linux Kernel=3.2.25
Linux Kernel=3.2.26
Linux Kernel=3.2.27
Linux Kernel=3.2.28
Linux Kernel=3.2.29
Linux Kernel=3.2.30
Linux Kernel=3.3
Linux Kernel=3.3-rc1
Linux Kernel=3.3-rc2
Linux Kernel=3.3-rc3
Linux Kernel=3.3-rc4
Linux Kernel=3.3-rc5
Linux Kernel=3.3-rc6
Linux Kernel=3.3-rc7
Linux Kernel=3.3.1
Linux Kernel=3.3.2
Linux Kernel=3.3.3
Linux Kernel=3.3.4
Linux Kernel=3.3.5
Linux Kernel=3.3.6
Linux Kernel=3.3.7
Linux Kernel=3.3.8
Linux Kernel=3.4
Linux Kernel=3.4-rc1
Linux Kernel=3.4-rc2
Linux Kernel=3.4-rc3
Linux Kernel=3.4-rc3
Linux Kernel=3.4-rc4
Linux Kernel=3.4-rc5
Linux Kernel=3.4-rc6
Linux Kernel=3.4-rc7
Linux Kernel=3.4.1
Linux Kernel=3.4.2
Linux Kernel=3.4.3
Linux Kernel=3.4.4
Linux Kernel=3.4.5
Linux Kernel=3.4.6
Linux Kernel=3.4.7
Linux Kernel=3.4.8
Linux Kernel=3.4.9
Linux Kernel=3.4.10
Linux Kernel=3.4.11
Linux Kernel=3.4.12
Linux Kernel=3.4.13
Linux Kernel=3.4.14
Linux Kernel=3.4.15
Linux Kernel=3.4.16
Linux Kernel=3.4.17
Linux Kernel=3.4.18
Linux Kernel=3.4.19
Linux Kernel=3.4.20
Linux Kernel=3.4.21
Linux Kernel=3.4.22
Linux Kernel=3.4.23
Linux Kernel=3.4.24
Linux Kernel=3.4.25
Linux Kernel=3.4.26
Linux Kernel=3.4.27
Linux Kernel=3.4.28
Linux Kernel=3.4.29
Linux Kernel=3.4.30
Linux Kernel=3.4.31
Linux Kernel=3.4.32
Linux Kernel=3.5.1
Linux Kernel=3.5.2
Linux Kernel=3.5.3
Linux Kernel=3.5.4
Linux Kernel=3.5.5
Linux Kernel=3.5.6
Linux Kernel=3.5.7
Linux Kernel=3.6
Linux Kernel=3.6.1
Linux Kernel=3.6.2
Linux Kernel=3.6.3
Linux Kernel=3.6.4
Linux Kernel=3.6.5
Linux Kernel=3.6.6
Linux Kernel=3.6.7
Linux Kernel=3.6.8
Linux Kernel=3.6.9
Linux Kernel=3.6.10
Linux Kernel=3.6.11
Linux Kernel=3.7
Linux Kernel=3.7.1
Linux Kernel=3.7.2
Linux Kernel=3.7.3
Linux Kernel=3.7.4
Linux Kernel=3.7.5
Linux Kernel=3.7.6
Linux Kernel=3.7.7
Linux Kernel=3.7.8
Linux Kernel=3.7.9
Linux Kernel=3.7.10
Linux Kernel=3.8.0
Linux Kernel=3.8.1
Linux Kernel=3.8.2
Linux Kernel=3.8.3
Linux Kernel=3.8.4
Linux Kernel=3.8.5
Linux Kernel=3.8.6
Linux Kernel=3.8.7
Linux Kernel=3.8.8
Linux Kernel=3.8.9
Linux Kernel=3.8.10
Linux Kernel=3.8.11
Linux Kernel=3.8.12
Linux Kernel=3.8.13
Linux Kernel=3.9-rc1
Linux Kernel=3.9-rc2
Linux Kernel=3.9-rc3
Linux Kernel=3.9-rc4
Linux Kernel=3.9-rc5
Linux Kernel=3.9-rc6
Linux Kernel=3.9-rc7
Linux Kernel=3.9.0
Linux Kernel=3.9.1
Linux Kernel=3.9.2
Linux Kernel=3.9.3
Linux Kernel=3.9.4
Linux Kernel=3.9.5
Linux Kernel=3.9.6
Linux Kernel=3.9.7
Linux Kernel=3.9.8
Linux Kernel=3.9.9
Linux Kernel=3.9.10
Linux Kernel=3.9.11
Linux Kernel=3.10.1
Linux Kernel=3.10.2
Linux Kernel=3.10.3
Linux Kernel=3.10.4
Linux Kernel=3.10.5
Linux Kernel=3.10.6
Linux Kernel=3.10.7
Linux Kernel=3.10.8
Linux Kernel=3.10.9
Linux Kernel=3.10.10
Linux Kernel=3.10.11
Linux Kernel=3.10.12
Linux Kernel=3.11
Linux Kernel=3.11.1
Linux Kernel=3.11.2
Linux Kernel=3.11.3
Fedora=18
Fedora=19
Red Hat Enterprise Linux=5
Red Hat Enterprise Linux=6.0
Red Hat Enterprise MRG=2.0
Red Hat Enterprise MRG=2.1
Red Hat Enterprise MRG=2.2
Red Hat Enterprise MRG=2.3
Red Hat Enterprise MRG=2.4

Remedy

http://marc.info/?l=linux-crypto-vger&m=137942122902845&w=2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2013-4345?

    CVE-2013-4345 has been assigned a medium severity level due to its potential impact on the randomness generated by the kernel.

  • How do I fix CVE-2013-4345?

    To fix CVE-2013-4345, it is recommended to update to a version of the Linux kernel that is not affected, such as versions 5.10.223-1 or 6.1.119-1.

  • Which Linux kernel versions are affected by CVE-2013-4345?

    CVE-2013-4345 affects Linux kernel versions up to 3.11.4 and various release candidates like 3.0-rc1 to 3.0-rc7.

  • What type of vulnerability is CVE-2013-4345?

    CVE-2013-4345 is a vulnerability related to the improper processing of non-block size aligned requests in the ANSI CPRNG implementation.

  • Can CVE-2013-4345 lead to security risks?

    Yes, CVE-2013-4345 can lead to security risks by potentially compromising the randomness of cryptographic operations.

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