Executive Summary
Summary | |
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Title | Cisco IOS and IOS XE Software DHCP Version 4 Relay Heap Overflow Denial of Service Vulnerability |
Informations | |||
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Name | cisco-sa-20180328-dhcpr1 | First vendor Publication | 2018-03-28 |
Vendor | Cisco | Last vendor Modification | 2018-03-28 |
Severity (Vendor) | N/A | Revision | N/A |
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
A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow condition on the affected device, which will cause the device to reload and result in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1 ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1"] This advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-66682"]. BEGIN PGP SIGNATURE iQJ5BAEBAgBjBQJau71YXBxDaXNjbyBQcm9kdWN0IFNlY3VyaXR5IEluY2lkZW50 IFJlc3BvbnNlIFRlYW0gKENpc2NvIFBTSVJUIGtleSAyMDE4LTIwMTkpIDxwc2ly dEBjaXNjby5jb20+AAoJEJa12PPJBfcz0YUP/2UzqiWfSAT03D16ppIw5AFpLasE 2thrx/pmJzXN4Jz6mhE/nTNVDo/UFPN90X81GPWeQ9ak2UcGvH0nK38c2cq8oiqb XMCs1qJOEiZlGutOGPztml+cNSEE2u9GKrZFifplywFwUT5AzMdZADDCAalfpNPw Bv2FYMnJx5Ul+r1q84mCL1f2a0WZBHgOnd7wLR3mQHyJi42BdlXl1RIrPnALcBTA rzG3IpqscY3SshCZC/a8mBk2xEp/ongenrCTAHmJ6/XuLHotM0RkoA0f7xiPEAu2 TiBo7Ljo6ZjnrDCWtqDyYw35rDCbk6IGbWeG8y4/KCicgApedzkpaQ9AhPU7XxCG As8tddCN2TYHeylBkqw7t3Ws1f8aMe0Gwvw9ywEoKUF3lPO2qojdm4pqbCNeGaZt AhlqOFaB14db4KaYGd16/PQKIfYqkBRQTNupFrrsmSGH0yUKVOCLPz/c+oTuv2Bq FInI5yom30+0qnpt7XVdEcaL/z+R9AiKqZt062UVjUprAdn2dz994uyJVJevpjCR i0Rj5Dh/of1UenYUfxaRR338yNJpZlroLltjIr1838ny5BvUhg9xKU4wT8ngCdkt f6RkETOfNEyXu9lc2QMzTbtYEeLnzJrC3qURLF/lWTVL2ivh4FVIJfzDEIlhaG1s 1qG4YaCEudCpzSps =i84s END PGP SIGNATURE _______________________________________________ cust-security-announce mailing list cust-security-announce@cisco.com To unsubscribe, send the command "unsubscribe" in the subject of your message to cust-security-announce-leave@cisco.com |
Original Source
Url : http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco (...) |
CWE : Common Weakness Enumeration
% | Id | Name |
---|---|---|
100 % | CWE-787 | Out-of-bounds Write (CWE/SANS Top 25) |
CPE : Common Platform Enumeration
Type | Description | Count |
---|---|---|
Os | 1 | |
Os | 1 |
Snort® IPS/IDS
Date | Description |
---|---|
2020-12-05 | Cisco IOS DHCP relay agent information memory corruption attempt RuleID : 46104 - Revision : 1 - Type : SERVER-OTHER |
Nessus® Vulnerability Scanner
Date | Description |
---|---|
2018-04-17 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20180328-dhcpr3-ios.nasl - Type : ACT_GATHER_INFO |
2018-04-17 | Name : The remote device is missing a vendor-supplied security patch. File : cisco-sa-20180328-dhcpr3-iosxe.nasl - Type : ACT_GATHER_INFO |
Alert History
Date | Informations |
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2020-12-05 21:23:46 |
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2018-04-24 00:21:09 |
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2018-03-29 05:20:09 |
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2018-03-28 21:19:12 |
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