Vulnerability Name:

CVE-2015-5879 (CCN-106588)

Assigned:2015-09-16
Published:2015-09-16
Updated:2016-12-22
Summary:XNU in the kernel in Apple iOS before 9 does not properly validate the headers of TCP packets, which allows remote attackers to bypass the sequence-number protection mechanism and cause a denial of service (TCP connection disruption) via a crafted header.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2015-5879

Source: APPLE
Type: Vendor Advisory
APPLE-SA-2015-09-16-1

Source: APPLE
Type: Vendor Advisory
APPLE-SA-2015-09-30-3

Source: BID
Type: UNKNOWN
76764

Source: SECTRACK
Type: UNKNOWN
1033609

Source: XF
Type: UNKNOWN
appleios-cve20155879-dos(106588)

Source: CCN
Type: Apple Web site
About the security content of iOS 9

Source: CONFIRM
Type: Vendor Advisory
https://support.apple.com/HT205212

Source: CONFIRM
Type: Vendor Advisory
https://support.apple.com/HT205267

Vulnerable Configuration:Configuration 1:
  • cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version <= 8.4.1)

    • Configuration 2:
  • cpe:/o:apple:mac_os_x:*:*:*:*:*:*:*:* (Version <= 10.10.5)

    • Configuration CCN 1:
  • cpe:/o:apple:ios:8.4.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    apple iphone os *
    apple mac os x *
    apple iphone os 8.4.1