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SUSE Linux 12 LTSS: 2019:1692-1 Important: Network Attack Fixes

suse
Calendar Grey June 24, 2019
Dist Suse Esm H88
Critical announcement from SUSE regarding the Linux Kernel addresses several security flaws and delivers essential remedies.
An update that solves 9 vulnerabilities and has 7 fixes is now available

Summary

The SUSE Linux Enterprise 12 kernel version 3.12.61 was updated to receive various security and bugfixes. The following security bugs were fixed: - CVE-2019-11477: A sequence of SACKs may have been crafted by a remote attacker such that one can trigger an integer overflow, leading to a kernel panic. (bsc#1137586). - CVE-2019-11478: It was possible to send a crafted sequence of SACKs which would fragment the TCP retransmission queue. A remote attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection. - CVE-2019-11479: It was possible to send a crafted sequence of SACKs which would fragment the RACK send map. A remote attacker may have been able to further exploit the fragmented send map to cause an expensive

References

#1090078 #1110785 #1113769 #1120843 #1120885

#1125580 #1125931 #1131543 #1131587 #1132374

#1132472 #1134848 #1135281 #1136424 #1136446

#1137586

Cross- CVE-2018-17972 CVE-2019-11190 CVE-2019-11477

CVE-2019-11478 CVE-2019-11479 CVE-2019-11833

CVE-2019-11884 CVE-2019-3846 CVE-2019-5489

Affected Products:

SUSE Linux Enterprise Server 12-LTSS

SUSE Linux Enterprise Module for Public Cloud 12

https://www.suse.com/security/cve/CVE-2018-17972.html

https://www.suse.com/security/cve/CVE-2019-11190.html

https://www.suse.com/security/cve/CVE-2019-11477.html

https://www.suse.com/security/cve/CVE-2019-11478.html

https://www.suse.com/security/cve/CVE-2019-11479.html

https://www.suse.com/security/cve/CVE-2019-11833.html

Severity
important
Lowest
Low
Medium
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Critical

Announcement ID: SUSE-SU-2019:1692-1
Rating: important

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