cvelist/2017/1000xxx/CVE-2017-1000112.json

{
   "CVE_data_meta" : {
      "ASSIGNER" : "cve-assign@distributedweaknessfiling.org",
      "DATE_ASSIGNED" : "2017-08-22T17:29:33.325175",
      "ID" : "CVE-2017-1000112",
      "REQUESTER" : "willemdebruijn.kernel@gmail.com",
      "STATE" : "PUBLIC"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "Linux Kernel",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_value" : "Linux Kernel since commit e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005."
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "Linux Kernel"
            }
         ]
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "Linux kernel: Exploitable memory corruption due to UFO to non-UFO path switch. When building a UFO packet with MSG_MORE __ip_append_data() calls ip_ufo_append_data() to append. However in between two send() calls, the append path can be switched from UFO to non-UFO one, which leads to a memory corruption. In case UFO packet lengths exceeds MTU, copy = maxfraglen - skb->len becomes negative on the non-UFO path and the branch to allocate new skb is taken. This triggers fragmentation and computation of fraggap = skb_prev->len - maxfraglen. Fraggap can exceed MTU, causing copy = datalen - transhdrlen - fraggap to become negative. Subsequently skb_copy_and_csum_bits() writes out-of-bounds. A similar issue is present in IPv6 code. The bug was introduced in e89e9cf539a2 (\"[IPv4/IPv6]: UFO Scatter-gather approach\") on Oct 18 2005."
         }
      ]
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "Memory Corruption"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "name" : "45147",
            "refsource" : "EXPLOIT-DB",
            "url" : "https://www.exploit-db.com/exploits/45147/"
         },
         {
            "name" : "[oss-security] 20170810 Linux kernel: CVE-2017-1000112: Exploitable memory corruption due to UFO to non-UFO path switch",
            "refsource" : "MLIST",
            "url" : "http://seclists.org/oss-sec/2017/q3/277"
         },
         {
            "name" : "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112",
            "refsource" : "MISC",
            "url" : "https://github.com/xairy/kernel-exploits/tree/master/CVE-2017-1000112"
         },
         {
            "name" : "DSA-3981",
            "refsource" : "DEBIAN",
            "url" : "http://www.debian.org/security/2017/dsa-3981"
         },
         {
            "name" : "RHSA-2017:3200",
            "refsource" : "REDHAT",
            "url" : "https://access.redhat.com/errata/RHSA-2017:3200"
         },
         {
            "name" : "RHSA-2017:2918",
            "refsource" : "REDHAT",
            "url" : "https://access.redhat.com/errata/RHSA-2017:2918"
         },
         {
            "name" : "RHSA-2017:2930",
            "refsource" : "REDHAT",
            "url" : "https://access.redhat.com/errata/RHSA-2017:2930"
         },
         {
            "name" : "RHSA-2017:2931",
            "refsource" : "REDHAT",
            "url" : "https://access.redhat.com/errata/RHSA-2017:2931"
         },
         {
            "name" : "100262",
            "refsource" : "BID",
            "url" : "http://www.securityfocus.com/bid/100262"
         },
         {
            "name" : "1039162",
            "refsource" : "SECTRACK",
            "url" : "http://www.securitytracker.com/id/1039162"
         }
      ]
   }
}