Vulnerability Name:

CVE-2018-16948 (CCN-149838)

Assigned:2018-09-11
Published:2018-09-11
Updated:2018-11-19
Summary:An issue was discovered in OpenAFS before 1.6.23 and 1.8.x before 1.8.2. Several RPC server routines did not fully initialize their output variables before returning, leaking memory contents from both the stack and the heap. Because the OpenAFS cache manager functions as an Rx server for the AFSCB service, clients are also susceptible to information leakage. For example, RXAFSCB_TellMeAboutYourself leaks kernel memory and KAM_ListEntry leaks kaserver memory.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/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): High
Integrity (I): None
Availibility (A): None
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/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): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-200
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2018-16948

Source: CCN
Type: OpenAFS Security Advisory-2018-002
information leakage from uninitialized RPC output variables

Source: CONFIRM
Type: Vendor Advisory
http://openafs.org/pages/security/OPENAFS-SA-2018-002.txt

Source: XF
Type: UNKNOWN
openafs-cve201816948-info-disc(149838)

Source: MLIST
Type: Third Party Advisory
[debian-lts-announce] 20180921 [SECURITY] [DLA 1513-1] openafs security update

Source: DEBIAN
Type: Third Party Advisory
DSA-4302

Vulnerable Configuration:Configuration 1:
  • cpe:/a:openafs:openafs:*:*:*:*:*:*:*:* (Version < 1.6.23)
  • OR cpe:/a:openafs:openafs:*:*:*:*:*:*:*:* (Version >= 1.8.0 and < 1.8.2)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:openafs:openafs:1.6.22.4:*:*:*:*:*:*:*
  • OR cpe:/a:openafs:openafs:1.8.0:*:*:*:*:*:*:*
  • OR cpe:/a:openafs:openafs:1.8.1.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:113056
    P
    		openafs-1.8.8-1.13 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:106496
    P
    		openafs-1.8.8-1.13 on GA media (Moderate)
    2021-10-01
    oval:com.ubuntu.disco:def:2018169480000000
    V
    		CVE-2018-16948 on Ubuntu 19.04 (disco) - medium.
    2018-09-12
    oval:com.ubuntu.bionic:def:2018169480000000
    V
    		CVE-2018-16948 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-09-12
    oval:com.ubuntu.xenial:def:2018169480000000
    V
    		CVE-2018-16948 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-09-12
    oval:com.ubuntu.bionic:def:201816948000
    V
    		CVE-2018-16948 on Ubuntu 18.04 LTS (bionic) - medium.
    2018-09-11
    oval:com.ubuntu.cosmic:def:2018169480000000
    V
    		CVE-2018-16948 on Ubuntu 18.10 (cosmic) - medium.
    2018-09-11
    oval:com.ubuntu.cosmic:def:201816948000
    V
    		CVE-2018-16948 on Ubuntu 18.10 (cosmic) - medium.
    2018-09-11
    oval:com.ubuntu.trusty:def:201816948000
    V
    		CVE-2018-16948 on Ubuntu 14.04 LTS (trusty) - medium.
    2018-09-11
    oval:com.ubuntu.xenial:def:201816948000
    V
    		CVE-2018-16948 on Ubuntu 16.04 LTS (xenial) - medium.
    2018-09-11
    BACK
    openafs openafs *
    openafs openafs *
    debian debian linux 8.0
    debian debian linux 9.0
    openafs openafs 1.6.22.4
    openafs openafs 1.8.0
    openafs openafs 1.8.1.1