PT-2021-3118 · Djvulibre+5 · Djvulibre+5

1Vanchen + 1 · Published 2021-05-11 · Updated 2025-10-14 · CVE-2021-32493

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions DjVuLibre versions 3.5.28 and earlier

Description A flaw was found in the function DJVU::GBitmap::decode() that handles crafted djvu files, leading to a heap buffer overflow. This may cause an application crash and potentially allow a remote attacker to execute arbitrary code on the target system using a specially crafted djvu file.

Recommendations For DjVuLibre versions 3.5.28 and earlier, as a temporary workaround, consider disabling the DJVU::GBitmap::decode() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-119

CWE-122

CWE-787

Related Identifiers

ALT-PU-2025-12685

ALT-PU-2025-12687

BDU:2021-02741

CVE-2021-32493

DLA-2667-1

DSA-5032-1

MGASA-2021-0247

OESA-2021-1255

OPENSUSE-SU-2021:0759-1

OPENSUSE-SU-2021:1641-1

OPENSUSE-SU-2021_0759-1

OPENSUSE-SU-2021_1641-1

OPENSUSE-SU-2024:10719-1

SUSE-SU-2021:14728-1

SUSE-SU-2021:1641-1

SUSE-SU-2021:1645-1

SUSE-SU-2021:1649-1

SUSE-SU-2021_14728-1

USN-4957-1

USN-4957-2

Affected Products

Alt Linux

Astra Linux

Djvulibre

Linuxmint

Suse

Ubuntu

References · 66

• 🔥 https://github.com/TeamSeri0us/pocs/blob/master/djvulibre/DJVU__filter_fv%40IW44EncodeCodec.cpp_499-43___SEGV_UNKNOW.md · Exploit
• https://security-tracker.debian.org/tracker/CVE-2021-32493 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3500 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1645-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:0759-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2022-0819SE17 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10719-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3500 · Security Note
• https://ubuntu.com/security/CVE-2021-32493 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:1641-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0926SE47 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-32491 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-32493 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20211008SE16 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5032-1 · Vendor Advisory