cnvd-2017-29274
Vulnerability from cnvd
Title: DNSmasq拒绝服务漏洞（CNVD-2017-29274）
Description:
DNSmasq是一个小巧且方便地用于配置DNS和DHCP的工具，适用于小型网络，它提供了DNS功能和可选择的DHCP功能。
DNSmasq 2.77及之前版本中存在拒绝服务漏洞，远程攻击者可通过发送特制DNS数据包而导致add_pseudoheader（）函数分配永远不会释放的内存，从而消耗目标系统上的过多内存。
Severity: 高
Patch Name: DNSmasq拒绝服务漏洞（CNVD-2017-29274）的补丁
Patch Description:
DNSmasq是一个小巧且方便地用于配置DNS和DHCP的工具，适用于小型网络，它提供了DNS功能和可选择的DHCP功能。
DNSmasq 2.77及之前版本中存在拒绝服务漏洞，远程攻击者可通过发送特制DNS数据包而导致add_pseudoheader（）函数分配永远不会释放的内存，从而消耗目标系统上的过多内存。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description:
厂商已发布漏洞修复程序，请及时关注更新： http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
Reference: http://securitytracker.com/id/1039474 http://www.securityfocus.com/bid/101085
Impacted products
| Name | Dnsmasq Dnsmasq <=2.77 |
|---|
{
"bids": {
"bid": {
"bidNumber": "101085"
}
},
"cves": {
"cve": {
"cveNumber": "CVE-2017-14495"
}
},
"description": "DNSmasq\u662f\u4e00\u4e2a\u5c0f\u5de7\u4e14\u65b9\u4fbf\u5730\u7528\u4e8e\u914d\u7f6eDNS\u548cDHCP\u7684\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u7f51\u7edc\uff0c\u5b83\u63d0\u4f9b\u4e86DNS\u529f\u80fd\u548c\u53ef\u9009\u62e9\u7684DHCP\u529f\u80fd\u3002\r\n\r\nDNSmasq 2.77\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236DNS\u6570\u636e\u5305\u800c\u5bfc\u81f4add_pseudoheader\uff08\uff09\u51fd\u6570\u5206\u914d\u6c38\u8fdc\u4e0d\u4f1a\u91ca\u653e\u7684\u5185\u5b58\uff0c\u4ece\u800c\u6d88\u8017\u76ee\u6807\u7cfb\u7edf\u4e0a\u7684\u8fc7\u591a\u5185\u5b58\u3002",
"discovererName": "Felix Wilhelm, Fermin J. Serna, Gabriel Campana, Kevin Hamacher and Ron Bowes of the Google Security Team",
"formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttp://www.thekelleys.org.uk/dnsmasq/CHANGELOG",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2017-29274",
"openTime": "2017-10-09",
"patchDescription": "DNSmasq\u662f\u4e00\u4e2a\u5c0f\u5de7\u4e14\u65b9\u4fbf\u5730\u7528\u4e8e\u914d\u7f6eDNS\u548cDHCP\u7684\u5de5\u5177\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u7f51\u7edc\uff0c\u5b83\u63d0\u4f9b\u4e86DNS\u529f\u80fd\u548c\u53ef\u9009\u62e9\u7684DHCP\u529f\u80fd\u3002\r\n\r\nDNSmasq 2.77\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u7279\u5236DNS\u6570\u636e\u5305\u800c\u5bfc\u81f4add_pseudoheader\uff08\uff09\u51fd\u6570\u5206\u914d\u6c38\u8fdc\u4e0d\u4f1a\u91ca\u653e\u7684\u5185\u5b58\uff0c\u4ece\u800c\u6d88\u8017\u76ee\u6807\u7cfb\u7edf\u4e0a\u7684\u8fc7\u591a\u5185\u5b58\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "DNSmasq\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-29274\uff09\u7684\u8865\u4e01",
"products": {
"product": "Dnsmasq Dnsmasq \u003c=2.77"
},
"referenceLink": "http://securitytracker.com/id/1039474\r\nhttp://www.securityfocus.com/bid/101085",
"serverity": "\u9ad8",
"submitTime": "2017-10-09",
"title": "DNSmasq\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-29274\uff09"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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