{
  "threat_severity" : "Important",
  "public_date" : "2017-09-28T00:00:00Z",
  "bugzilla" : {
    "description" : "nss: Potential use-after-free in TLS 1.2 server when verifying client authentication",
    "id" : "1471171",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1471171"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.", "A use-after-free flaw was found in the TLS 1.2 implementation in the NSS library when client authentication was used. A malicious client could use this flaw to cause an application compiled against NSS to crash or, potentially, execute arbitrary code with the permission of the user running the application." ],
  "acknowledgement" : "Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Martin Thomson as the original reporter.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2017-09-28T00:00:00Z",
    "advisory" : "RHSA-2017:2832",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "nss-0:3.28.4-4.el6_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2017-09-28T00:00:00Z",
    "advisory" : "RHSA-2017:2832",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "nss-0:3.28.4-12.el7_4"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Will not fix",
    "package_name" : "nss",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2017-7805\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-7805" ],
  "name" : "CVE-2017-7805",
  "csaw" : false
}