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ubuntucveUbuntu.comUB:CVE-2020-35635
HistoryAug 30, 2021 - 12:00 a.m.

CVE-2020-35635

2021-08-3000:00:00
ubuntu.com
ubuntu.com
19
cgal
nef polygon-parsing
code execution vulnerability
out-of-bounds read
type confusion
malformed file

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.007

Percentile

81.2%

A code execution vulnerability exists in the Nef polygon-parsing
functionality of CGAL libcgal CGAL-5.1.1 in Nef_S2/SNC_io_parser.h
SNC_io_parser::read_sface() store_sm_boundary_item() Sloop_of OOB read. A
specially crafted malformed file can lead to an out-of-bounds read and type
confusion, which could lead to code execution. An attacker can provide
malicious input to trigger this vulnerability.

Notes

Author Note
pfsmorigo possible regression introduced by fix, see GH issue 5514

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.007

Percentile

81.2%