CVE-2021-26948

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Null pointer dereference in the htmldoc v1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service via a crafted html file.

Updated htmldoc packages fix security vulnerabilities:

Integer overflow in the htmldoc 1.9.11 and before may allow attackers to execute arbitrary code and cause a denial of service that is similar to CVE-2017-9181 (CVE-2021-20308).

AddressSanitizer: double-free in function pspdf_export ps-pdf.cxx (CVE-2021-23158).

AddressSanitizer: heap-buffer-overflow in pspdf_prepare_outpages() in ps-pdf.cxx (CVE-2021-23165).

AddressSanitizer: SEGV in file_extension file.c (CVE-2021-23180).

AddressSanitizer: SEGV on unknown address 0x000000000014 (CVE-2021-23191).

AddressSanitizer: stack-buffer-overflow in parse_table ps-pdf.cxx (CVE-2021-23206).

AddressSanitizer: heap-buffer-overflow in pspdf_prepare_page(int) ps-pdf.cxx (CVE-2021-26252).

AddressSanitizer: heap-buffer-overflow on render_table_row() ps-pdf.cxx (CVE-2021-26259).

SEGV on unknown address 0x000000000000 (CVE-2021-26948).

It was discovered that HTMLDOC incorrectly handled certain inputs, which could lead to an integer overflow. An attacker could potentially use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-20308)

It was discovered that HTMLDOC incorrectly handled memory in pspdf_export, which could lead to a double-free. An attacker could potentially use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-23158)

It was discovered that HTMLDOC incorrectly handled memory when loading a JPEG image, which could lead to a NULL pointer dereference. An attacker could potentially use this issue to cause a denial of service. (CVE-2021-23191, CVE-2021-26948)

It was discovered that HTMLDOC incorrectly handled certain inputs, which could lead to a stack buffer overflow. An attacker could potentially use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-23206, CVE-2021-40985, CVE-2021-43579)

It was discovered that HTMLDOC incorrectly handled memory in pdpdf_prepare_page and render_table_row, which could lead to a heap buffer overflow. An attacker could potentially use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-26252, CVE-2021-26259)

It was discovered that HTMLDOC incorrectly handled memory in parse_paragraph, which could lead to a heap buffer overflow. An attacker could potentially use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-34119)

It was discovered that HTMLDOC incorrectly handled memory in parse_tree. An attacker could potentially use this issue to leak sensitive information. (CVE-2021-34121)