Microsoft Internet Explorer 4.01/5.0 IFRAME ExecCommand information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 4.01/5.0. It has been classified as critical. Affected by this issue is the function ExecCommand of the component IFRAME Handler. The manipulation leads to information disclosure. This vulnerability is listed as CVE-1999-0877. The attack may be initiated remotely. In addition, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 4.01/5.0 (Web Browser) and classified as problematic. This issue affects the function ExecCommand of the component IFRAME Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Internet Explorer 5 allows remote attackers to read files via an ExecCommand method called on an IFRAME.

The issue has been introduced in 11/18/1997. The weakness was presented 10/01/1999 as MS99-042 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. The identification of this vulnerability is CVE-1999-0877. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 682 days. During that time the estimated underground price was around $5k-$25k.

Applying the patch MS99-042 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (3313), Exploit-DB (19539), SecurityFocus (BID 696†) and Vulnerability Center (SBV-4242†). support.microsoft.com is providing further details. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS99-042

Timelineinfo

11/18/1997 🔍
10/01/1999 +682 days 🔍
10/01/1999 +0 days 🔍
10/11/1999 +9 days 🔍
10/11/1999 +0 days 🔍
05/03/2004 +1666 days 🔍
06/21/2014 +3701 days 🔍
02/28/2025 +3905 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS99-042
Status: Confirmed

CVE: CVE-1999-0877 (🔍)
GCVE (CVE): GCVE-0-1999-0877
GCVE (VulDB): GCVE-100-14873
X-Force: 3313
SecurityFocus: 696
Vulnerability Center: 4242 - [MS99-042] Internet Explorer 5 Allows File Disclosure, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 06/22/2014 01:40
Updated: 02/28/2025 17:43
Changes: 06/22/2014 01:40 (64), 04/07/2017 12:06 (1), 06/23/2021 09:52 (4), 02/28/2025 17:43 (23)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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