Vulnerability Name:

CVE-2019-8921 (CCN-214165)

Assigned:2019-02-25
Published:2019-02-25
Updated:2022-11-07
Summary:An issue was discovered in bluetoothd in BlueZ through 5.48. The vulnerability lies in the handling of a SVC_ATTR_REQ by the SDP implementation. By crafting a malicious CSTATE, it is possible to trick the server into returning more bytes than the buffer actually holds, resulting in leaking arbitrary heap data. The root cause can be found in the function service_attr_req of sdpd-request.c. The server does not check whether the CSTATE data is the same in consecutive requests, and instead simply trusts that it is the same.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Adjacent
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)
6.8 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:P/RL:U/RC:R)
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:3.3 Low (CVSS v2 Vector: AV:A/AC:L/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Adjacent_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-345
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2019-8921

Source: CCN
Type: BlueZ Web site
BlueZ

Source: XF
Type: UNKNOWN
bluez-cve20198921-info-disc(214165)

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20221024 [SECURITY] [DLA 3157-1] bluez security update

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20211203-0002/

Source: CCN
Type: SSD Advisory
Linux BlueZ Information Leak and Heap Overflow

Source: MISC
Type: Exploit, Patch, Third Party Advisory
https://ssd-disclosure.com/ssd-advisory-linux-bluez-information-leak-and-heap-overflow/

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2019-8921

Vulnerable Configuration:Configuration 1:
  • cpe:/a:bluez:bluez:*:*:*:*:*:*:*:* (Version <= 5.48)
  • AND
  • cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:10.0:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:bluez:bluez:5.17:*:*:*:*:*:*:*
  • OR cpe:/a:bluez:bluez:5.48:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    bluez bluez *
    linux linux kernel -
    debian debian linux 10.0
    bluez bluez 5.17
    bluez bluez 5.48