PT-2021-3123 · Djvulibre+5 · Djvulibre+5

1Vanchen + 1 · Published 2021-05-11 · Updated 2025-10-14 · CVE-2021-32491

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 The issue is related to an integer overflow in the render() function in the tools/ddjvu component of DjVuLibre. This can be exploited by a remote attacker using a crafted djvu file, potentially leading to an application crash and other consequences.

Recommendations For DjVuLibre versions 3.5.28 and earlier, consider disabling the render() function in tools/ddjvu as a temporary workaround until a patch is available. Restrict the use of crafted djvu files to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

ALT-PU-2025-12685

ALT-PU-2025-12687

BDU:2021-02746

CVE-2021-32491

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 · 68

• 🔥 https://github.com/TeamSeri0us/pocs/blob/master/djvulibre/DJVU__filter_fv%40IW44EncodeCodec.cpp_499-43___SEGV_UNKNOW.md · Exploit
• 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://nvd.nist.gov/vuln/detail/CVE-2021-32491 · 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://wiki.astralinux.ru/astra-linux-se16-bulletin-20211008SE16 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-5032-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/AFBA3B7ZE5WL3W3IC3SJOZLTIMZPKXES · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2021-1255 · Vendor Advisory