ALT-PU-2020-1224-1

BDU:2020-01598

MEDIUM5.9

Уязвимость реализации механизма HMAC-SHA-256 криптографической библиотеки GnuTLS, позволяющая нарушителю осуществить атаку типа «Lucky 13» и атаку с восстановлением открытого текста

Published: 2020-04-16Modified: 2021-11-28

CVSS 3.xMEDIUM 5.9

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:C/I:N/A:N

References

CVE-2018-10844

BDU:2020-01599

MEDIUM5.9

Уязвимость реализации механизма HMAC-SHA-384 криптографической библиотеки GnuTLS, позволяющая нарушителю осуществить атаку типа «Lucky 13» и атаку с восстановлением открытого текста

Published: 2020-04-16Modified: 2021-11-29

CVSS 3.xMEDIUM 5.9

CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:C/I:N/A:N

References

CVE-2018-10845

CVE-2018-10844

MEDIUM5.9

It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.

Published: 2018-08-22Modified: 2024-11-21

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS 3.xMEDIUM 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

CVE-2018-10845

MEDIUM5.9

It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

Published: 2018-08-22Modified: 2024-11-21

CVSS 2.0MEDIUM 4.3

CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS 3.xMEDIUM 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References

CVE-2018-10846

MEDIUM5.6

A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.

Published: 2018-08-22Modified: 2024-11-21

CVSS 2.0LOW 1.9

CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS 3.xMEDIUM 5.6

CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

References

Package update gnutls30 in branch p9

Closed issues (5)

It was found that the GnuTLS implementation of HMAC-SHA-256 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data using crafted packets.

It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote attackers could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.

A cache-based side channel in GnuTLS implementation that leads to plain text recovery in cross-VM attack setting was found. An attacker could use a combination of "Just in Time" Prime+probe attack in combination with Lucky-13 attack to recover plain text using crafted packets.