SB2025112634 - Ubuntu update for mupdf

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) Division by zero (CVE-ID: CVE-2023-51103)

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a divide by zero error within the fz_new_pixmap_from_float_data() function in pixmap.c. A remote attacker can trick the victim into opening a specially crafted PDF file and crash the application. 

2) Division by zero (CVE-ID: CVE-2023-51104)

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a divide by zero error within the pnm_binary_read_image() function in  load-pnm.c. A remote attacker can trick the victim into opening a specially crafted PDF file and crash the application. 

3) Division by zero (CVE-ID: CVE-2023-51105)

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a divide by zero error within the bmp_decompress_rle4() function in load-bmp.c. A remote attacker can trick the victim into opening a specially crafted PDF file and crash the application. 

4) Division by zero (CVE-ID: CVE-2023-51106)

The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a divide by zero error within the pnm_binary_read_image() function in load-pnm.c. A remote attacker can trick the victim into opening a specially crafted PDF file and crash the application. 

5) Buffer overflow (CVE-ID: CVE-2024-46657)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing PDF files. A remote attacker can pass a specially crafted PDF file to the application, trigger memory corruption and perform a denial of service (DoS) attack.

6) Uncontrolled recursion (CVE-ID: CVE-2025-46206)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an infinite recursion in the `mutool clean` utility. A remote attacker can trick the victim into opening a specially crated PDF file and crash the application. 

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-7888-1