TI-2005-01832 Aliases CVE-2005-1935 GHSA-7wp6-vjqc-vxjv

Heap-based buffer overflow in the BERDecBitString function in Microsoft ASN.1 library…

MEDIUM 55Published 2005-06-09 · Updated 2024-08-07

Key facts

Attack vector: Network
Privileges required: None
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Partial · Partial · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA.

Summary

Heap-based buffer overflow in the BERDecBitString function in Microsoft ASN.1 library (MSASN1.DLL) allows remote attackers to execute arbitrary code via nested constructed bit strings, which leads to a realloc of a non-null pointer and causes the function to overwrite previously freed memory, as demonstrated using a SPNEGO token with a constructed bit string during HTTP authentication, and a different vulnerability than CVE-2003-0818. NOTE: the researcher has claimed that MS:MS04-007 fixes this issue.

Why it matters now

EPSS 0.26629 98th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 12

CPE	Versions	Role	Vendor
cpe:2.3:o:microsoft:windows_2000::sp2::::::*	all versions	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_2000::sp3::::::*	all versions	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_2000::sp4::fr::::	all versions	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_2003_server:64-bit:::::::*	64-bit	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_2003_server:r2:::::::*	r2	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6:terminal_server:::::*	4.0 sp6	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:server:::::*	4.0 sp6a	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:workstation:::::*	4.0 sp6a	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_xp:::64-bit:::::*	all versions	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_xp::gold::::::*	all versions	Vulnerable	Microsoft

cpe:2.3:o:microsoft:windows_2000:*:sp2:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_2000:*:sp3:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_2000:*:sp4:*:fr:*:*:*:* Versions all versions Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_2003_server:64-bit:*:*:*:*:*:*:* Versions 64-bit Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_2003_server:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6:terminal_server:*:*:*:*:* Versions 4.0 sp6 Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:server:*:*:*:*:* Versions 4.0 sp6a Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_nt:4.0:sp6a:workstation:*:*:*:*:* Versions 4.0 sp6a Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_xp:*:*:64-bit:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_xp:*:gold:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft

Show 2 more CPE

CPE	Versions	Role	Vendor
cpe:2.3:o:microsoft:windows_xp::sp1:64-bit:::::	all versions	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_xp::sp1:tablet_pc:::::	all versions	Vulnerable	Microsoft

cpe:2.3:o:microsoft:windows_xp:*:sp1:64-bit:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_xp:*:sp1:tablet_pc:*:*:*:*:* Versions all versions Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2005-1935
2026-10-03 Alias added: GHSA-7wp6-vjqc-vxjv

References

Exploit 1

http://www.phreedom.org/solar/exploits/msasn1-bitstring/

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TI-2010-00224 The kernel in Microsoft Windows NT 3.1 through Windows 7, including Windows 2000 SP4… KEVCVSS 3.1HIGH 7.8
TI-2009-01065 The kernel in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold… KEVCVSS 3.1HIGH 7.8
TI-2004-00181 The POSIX component of Microsoft Windows NT and Windows 2000 allows local users to… KEVCVSS 3.1HIGH 7.8
TI-2002-00354 smss.exe debugging subsystem in Windows NT and Windows 2000 does not properly… KEVCVSS 3.1HIGH 7.8

See all 513 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences