Vulnerability Name:

CVE-2020-27787 (CCN-234009)

Assigned:2020-01-14
Published:2020-01-14
Updated:2022-08-22
Summary:A Segmentaation fault was found in UPX in invert_pt_dynamic() function in p_lx_elf.cpp. An attacker with a crafted input file allows invalid memory address access that could lead to a denial of service.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2020-27787

Source: XF
Type: UNKNOWN
upx-cve202027787-dos(234009)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/upx/upx/commit/e2f60adc95334f47e286838dac33160819c5d74d

Source: CCN
Type: UPX GIT Repository
Segmentation fault in PackLinuxElf64::invert_pt_dynamic at p_lx_elf.cpp:5173 #333

Source: MISC
Type: Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/upx/upx/issues/333

Vulnerable Configuration:Configuration 1:
  • cpe:/a:upx_project:upx:*:*:*:*:*:*:*:* (Version < 3.96)

    • Configuration CCN 1:
  • cpe:/a:upx_project:upx:3.95:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    upx_project upx *
    upx_project upx 3.95