Executive Summary
| Summary | |
|---|---|
| Title | linux security update |
| Informations | |||
|---|---|---|---|
| Name | DSA-4272 | First vendor Publication | 2018-08-14 |
| Vendor | Debian | Last vendor Modification | 2018-08-14 |
| Severity (Vendor) | N/A | Revision | 1 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.8 | Attack Range | Network |
| Cvss Impact Score | 6.9 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| CVE-2018-5391 (FragmentSmack) Juha-Matti Tilli discovered a flaw in the way the Linux kernel handled reassembly of fragmented IPv4 and IPv6 packets. A remote attacker can take advantage of this flaw to trigger time and calculation expensive fragment reassembly algorithms by sending specially crafted packets, leading to remote denial of service. This is mitigated by reducing the default limits on memory usage for incomplete fragmented packets. The same mitigation can be achieved without the need to reboot, by setting the sysctls: net.ipv4.ipfrag_high_thresh = 262144 net.ipv6.ip6frag_high_thresh = 262144 net.ipv4.ipfrag_low_thresh = 196608 net.ipv6.ip6frag_low_thresh = 196608 The default values may still be increased by local configuration if necessary. For the stable distribution (stretch), this problem has been fixed in version 4.9.110-3+deb9u2. We recommend that you upgrade your linux packages. For the detailed security status of linux please refer to its security tracker page at: https://security-tracker.debian.org/tracker/linux |
Original Source
| Url : http://www.debian.org/security/2018/dsa-4272 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-20 | Improper Input Validation |
CPE : Common Platform Enumeration
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2019-01-11 | Name : The remote Virtuozzo host is missing multiple security updates. File : Virtuozzo_VZA-2018-075.nasl - Type : ACT_GATHER_INFO |
| 2019-01-10 | Name : The remote device is affected by multiple vulnerabilities. File : juniper_space_jsa10917_184R1.nasl - Type : ACT_GATHER_INFO |
| 2018-11-16 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2018-3083.nasl - Type : ACT_GATHER_INFO |
| 2018-10-26 | Name : The remote EulerOS Virtualization host is missing a security update. File : EulerOS_SA-2018-1352.nasl - Type : ACT_GATHER_INFO |
| 2018-10-10 | Name : The remote CentOS host is missing one or more security updates. File : centos_RHSA-2018-2846.nasl - Type : ACT_GATHER_INFO |
| 2018-09-04 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1278.nasl - Type : ACT_GATHER_INFO |
| 2018-09-04 | Name : The remote EulerOS host is missing multiple security updates. File : EulerOS_SA-2018-1279.nasl - Type : ACT_GATHER_INFO |
| 2018-08-16 | Name : The remote Debian host is missing a security update. File : debian_DLA-1466.nasl - Type : ACT_GATHER_INFO |
| 2018-08-15 | Name : The remote Amazon Linux 2 host is missing a security update. File : al2_ALAS-2018-1058.nasl - Type : ACT_GATHER_INFO |
| 2018-08-15 | Name : The remote Amazon Linux AMI host is missing a security update. File : ala_ALAS-2018-1058.nasl - Type : ACT_GATHER_INFO |
| 2018-08-15 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-4272.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2018-11-16 21:21:44 |
|
| 2018-09-07 17:21:48 |
|
| 2018-08-15 00:18:59 |
|
