Severity: CRITICAL
Description: S-Lang 2.3.2 was discovered to contain an arithmetic exception via the function tt_sprintf().
CVSS Score: N/A
D
No data available.
No data available.
No data available.
1. Risk Assessment
The vulnerability CVE-2023-45927 is an arithmetic exception within the tt_sprintf() function of S-Lang 2.3.2. This indicates a potential for a crash or unexpected behavior when S-Lang processes input using this function. The CVSS v3.1 score is 9.1 (Critical), indicating a high severity vulnerability. The vulnerability is remotely exploitable with low attack complexity, requiring no privileges or user interaction. A successful exploit can lead to high impact on both confidentiality and availability. The EPSS score is 0.0014, suggesting a relatively low, but not insignificant, probability of exploitation in the wild. The underlying CWE is CWE-703, Improper Check or Handling of Exceptional Conditions. Business impact could range from service disruption if S-Lang is used in a critical application, to potential information disclosure if the arithmetic exception leads to unexpected data handling. The ease of exploitation is considered moderate, as it requires crafting specific input that triggers the arithmetic exception.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by sending a specially crafted input string to an application using S-Lang 2.3.2. Let's consider a scenario where S-Lang is used in a text processing application. The attacker crafts an input string that, when processed by tt_sprintf(), causes a division by zero or an integer overflow. This triggers the arithmetic exception, potentially crashing the application or causing it to behave unpredictably. If the application doesn't handle the exception gracefully, it could lead to a denial of service, preventing legitimate users from accessing the service. Furthermore, if the application is handling sensitive data during the tt_sprintf() call, the crash could expose portions of memory containing that data, leading to potential information disclosure. The attack vector is network-based, meaning the attacker can remotely trigger the vulnerability.
3. Mitigation Recommendations
The primary mitigation for CVE-2023-45927 is to upgrade to a patched version of S-Lang. If a patched version is not immediately available, consider the following:
* Patching: Upgrade to the latest version of S-Lang, if available. Check the official S-Lang website (http://www.s-lang.org/) for updates.
* Input Validation: Implement robust input validation to limit the range and type of data passed to tt_sprintf(). This can help prevent the arithmetic exception from occurring.
* Exception Handling: Implement proper exception handling within the application to gracefully handle the arithmetic exception. This can prevent the application from crashing and potentially minimize the impact of the vulnerability.
* Monitor for Crashes: Monitor the application for crashes that might be caused by the vulnerability. This can help identify affected systems and prioritize patching.
* Consider using a Web Application Firewall (WAF) if S-Lang is exposed to the internet, to filter out potentially malicious input.
4. Executive Summary
S-Lang 2.3.2 contains a critical vulnerability (CVE-2023-45927) that could lead to application crashes and potential information disclosure. The vulnerability is triggered by a specially crafted input that causes an arithmetic exception during string formatting. A successful attack can disrupt service availability and potentially expose sensitive data. We recommend upgrading to the latest version of S-Lang as soon as possible. If patching is delayed, implement input validation and exception handling to mitigate the risk. Addressing this vulnerability is important to ensure the stability and security of applications that rely on S-Lang, and to protect against potential service disruptions and data breaches. The vulnerability is remotely exploitable making it a high priority for remediation.
Severity: CRITICAL
Description: S-Lang 2.3.2 was discovered to contain a segmentation fault via the function fixup_tgetstr().
CVSS Score: N/A
D
No data available.
No data available.
1. Risk Assessment
The vulnerability CVE-2023-45929 is a segmentation fault within the S-Lang 2.3.2 library, specifically in the fixup_tgetstr() function. This indicates a potential buffer overflow or memory corruption issue. The CVSS v3.1 score is 9.1 (Critical), indicating a high risk. The vulnerability is remotely exploitable with low attack complexity, requiring no user interaction. Successful exploitation can lead to high impact on confidentiality and availability, with integrity impact being none. This means an attacker could potentially gain access to sensitive data or cause a denial-of-service. The EPSS score of 0.001260000 suggests a relatively low, but non-negligible, probability of exploitation in the wild. The business impact depends on how S-Lang is utilized; if it’s a core component of a customer-facing application, the impact is significant, potentially leading to service outages or data breaches. If used in a less critical internal tool, the impact is lower, but still warrants attention. The likelihood of exploitation is moderate, given the severity and network attack vector.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by crafting a malicious input that, when processed by the fixup_tgetstr() function, triggers a segmentation fault. This could be achieved by sending a specifically formatted string to an application utilizing S-Lang 2.3.2. For example, consider a terminal application using S-Lang for screen rendering. An attacker could send a specially crafted terminal control sequence that, when processed by fixup_tgetstr(), overflows a buffer. This overflow could overwrite critical data, potentially allowing the attacker to control program execution. The attack vector is network-based, meaning an attacker can exploit the vulnerability remotely without needing local access to the system. The outcome could range from a simple crash of the application, leading to a denial of service, to complete control of the process, allowing the attacker to execute arbitrary code with the privileges of the application.
3. Mitigation Recommendations
The primary mitigation is to upgrade to a patched version of S-Lang. While the exact patched version isn't specified in the CVE details, upgrading to the latest stable release is recommended. Organizations using S-Lang 2.3.2 should immediately prioritize patching. If a direct upgrade isn't possible, consider implementing input validation to limit the size and format of strings passed to the fixup_tgetstr() function. This will act as a temporary mitigation while a full upgrade is planned. Monitor network traffic for suspicious activity, especially traffic to systems utilizing S-Lang. Resources: Consult the S-Lang project website (http://www.s-lang.org/) for the latest release and patch information. Refer to the full disclosure mailing list archive (http://seclists.org/fulldisclosure/2024/Jan/57) for additional details on the vulnerability.
4. Executive Summary
S-Lang 2.3.2 contains a critical vulnerability (CVE-2023-45929) that could allow an attacker to crash applications or potentially take control of systems. The vulnerability is a segmentation fault caused by a flaw in the fixup_tgetstr() function, and it is remotely exploitable with minimal effort. This means an attacker can potentially disrupt service or steal sensitive data without needing to authenticate or interact with the system. The most effective way to address this vulnerability is to upgrade to the latest version of S-Lang. Prompt action is recommended, particularly if S-Lang is a key component of customer-facing applications, to minimize the risk of service disruptions and potential data breaches. Ignoring this vulnerability could result in a significant business impact, including lost productivity, damaged reputation, and potential financial losses.