Vulnerability Name:

CVE-2020-7458 (CCN-184856)

Assigned:2020-07-08
Published:2020-07-08
Updated:2022-01-04
Summary:In FreeBSD 12.1-STABLE before r362281, 11.4-STABLE before r362281, and 11.4-RELEASE before p1, long values in the user-controlled PATH environment variable cause posix_spawnp to write beyond the end of the heap allocated stack possibly leading to arbitrary code execution.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/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): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/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): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2020-7458

Source: XF
Type: UNKNOWN
freebsd-cve20207458-bo(184856)

Source: MISC
Type: Patch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:18.posix_spawnp.asc

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20200724-0002/

Source: CCN
Type: FreeBSD-SA-20:18.posix_spawnp
posix_spawnp(3) buffer overflow

Vulnerable Configuration:Configuration 1:
  • cpe:/o:freebsd:freebsd:11.4:-:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:11.4:beta1:*:*:*:*:*:*
  • OR cpe:/o:freebsd:freebsd:12.1:-:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:freebsd:freebsd:11.4:-:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    freebsd freebsd 11.4 -
    freebsd freebsd 11.4 beta1
    freebsd freebsd 12.1 -
    freebsd freebsd 11.4 -