CVE-2021-40647

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

In man2html 1.6g, a specific string being read in from a file will overwrite the size parameter in the top chunk of the heap. This at least causes the program to segmentation abort if the heap size parameter isn't aligned correctly. In version before GLIBC version 2.29 and aligned correctly, it allows arbitrary write anywhere in the programs memory.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Sep 9, 2022
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2021

CVE-2021-406485.5In man2html 1.6g, a filename can be created to overwrite the previous size parameter of the next chunk and the fd, bk, fd_nextsize, bk_nexts CVE-2021-406496.5In Connx Version 6.2.0.1269 (20210623), a cookie can be issued by the application and not have the HttpOnly flag set.CVE-2021-40658.8Use after free in autofill in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a cra CVE-2021-406506.5In Connx Version 6.2.0.1269 (20210623), a cookie can be issued by the application and not have the secure flag set.CVE-2021-406516.5OS4Ed OpenSIS Community 8.0 is vulnerable to a local file inclusion vulnerability in Modules.php (modname parameter), which can disclose arb CVE-2021-406546.5An information disclosure issue exist in D-LINK-DIR-615 B2 2.01mt. An attacker can obtain a user name and password by forging a post request CVE-2021-406557.5An informtion disclosure issue exists in D-LINK-DIR-605 B2 Firmware Version : 2.01MT. An attacker can obtain a user name and password by for CVE-2021-406568.8libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.CVE-2021-406584.8Textpattern 4.8.7 is affected by a HTML injection vulnerability through “Content>Write>Body”.CVE-2021-40668.8Integer underflow in ANGLE in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a cra CVE-2021-406607.5An issue was discovered in Delight Nashorn Sandbox 0.2.0. There is an ReDoS vulnerability that can be exploited to launching a denial of ser CVE-2021-406617.5A remote, unauthenticated, directory traversal vulnerability was identified within the web interface used by IND780 Advanced Weighing Termin