CVE-2025-4969: Out-of-bounds Read
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read).
AI Analysis
Technical Summary
CVE-2025-4969 is a medium-severity vulnerability identified in the libsoup package, which is a GNOME HTTP client/server library commonly used in various Linux distributions, including Red Hat Enterprise Linux (RHEL) 10. The vulnerability arises from libsoup's improper handling of multipart HTTP messages, specifically its failure to correctly verify the termination of these multipart bodies. An attacker can exploit this flaw by sending a specially crafted multipart HTTP request that causes the server or application consuming libsoup to perform an out-of-bounds read operation. This means the program reads memory beyond the allocated buffer, potentially leaking sensitive information stored in adjacent memory regions. The vulnerability does not require any authentication or user interaction and can be exploited remotely over the network, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact primarily affects confidentiality, as the out-of-bounds read could disclose information, and availability, since improper memory reads may cause application crashes or instability. However, integrity is not impacted. The CVSS score of 6.5 reflects a medium severity level, balancing the ease of exploitation with the limited scope of impact. No known exploits are currently reported in the wild, and no patches or mitigations have been linked yet. Given libsoup's role in HTTP communications, any server or service relying on it for processing multipart HTTP requests is potentially vulnerable. This includes web servers, APIs, or other network services running on RHEL 10 or other Linux distributions using vulnerable libsoup versions. The vulnerability's exploitation vector is network-based, requiring no privileges or user interaction, making it a concern for exposed services handling multipart HTTP content.
Potential Impact
For European organizations, the impact of CVE-2025-4969 depends on their use of Red Hat Enterprise Linux 10 or other Linux distributions incorporating the vulnerable libsoup version. Organizations running web servers, APIs, or middleware that process multipart HTTP requests using libsoup are at risk of information disclosure and potential service disruption. Confidential data leakage could include sensitive configuration, credentials, or user data residing in memory adjacent to the buffer read out-of-bounds. This could lead to privacy violations under GDPR and other data protection regulations, resulting in legal and reputational consequences. Additionally, service instability or crashes caused by the vulnerability could disrupt business operations, especially for critical infrastructure or online services. Since the vulnerability can be exploited remotely without authentication, exposed internet-facing services are particularly vulnerable. European organizations in sectors such as finance, healthcare, government, and telecommunications, which often rely on RHEL for secure and stable operations, may face increased risk. The absence of known exploits currently reduces immediate threat but does not eliminate the risk of future exploitation, especially as threat actors often target widely used open-source libraries.
Mitigation Recommendations
To mitigate CVE-2025-4969, European organizations should: 1) Monitor Red Hat and other Linux distribution security advisories closely for patches or updates addressing this vulnerability and apply them promptly once available. 2) Conduct an inventory of all systems running RHEL 10 or other Linux distributions that include libsoup, focusing on services processing multipart HTTP requests. 3) Where possible, implement network-level protections such as Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) to detect and block suspicious multipart HTTP payloads that could exploit this flaw. 4) Restrict exposure of vulnerable services to untrusted networks by using network segmentation, VPNs, or access control lists to limit incoming traffic. 5) Employ runtime application self-protection (RASP) or memory protection technologies to detect abnormal memory access patterns that may indicate exploitation attempts. 6) Review application logs and network traffic for anomalous multipart HTTP requests that could signal exploitation attempts. 7) Consider disabling or replacing libsoup-dependent components if immediate patching is not feasible, or implement additional input validation at the application layer to verify multipart message integrity before processing.
Affected Countries
Germany, France, United Kingdom, Netherlands, Italy, Spain, Poland, Sweden, Belgium, Finland
CVE-2025-4969: Out-of-bounds Read
Description
A vulnerability was found in the libsoup package. This flaw stems from its failure to correctly verify the termination of multipart HTTP messages. This can allow a remote attacker to send a specially crafted multipart HTTP body, causing the libsoup-consuming server to read beyond its allocated memory boundaries (out-of-bounds read).
AI-Powered Analysis
Technical Analysis
CVE-2025-4969 is a medium-severity vulnerability identified in the libsoup package, which is a GNOME HTTP client/server library commonly used in various Linux distributions, including Red Hat Enterprise Linux (RHEL) 10. The vulnerability arises from libsoup's improper handling of multipart HTTP messages, specifically its failure to correctly verify the termination of these multipart bodies. An attacker can exploit this flaw by sending a specially crafted multipart HTTP request that causes the server or application consuming libsoup to perform an out-of-bounds read operation. This means the program reads memory beyond the allocated buffer, potentially leaking sensitive information stored in adjacent memory regions. The vulnerability does not require any authentication or user interaction and can be exploited remotely over the network, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The impact primarily affects confidentiality, as the out-of-bounds read could disclose information, and availability, since improper memory reads may cause application crashes or instability. However, integrity is not impacted. The CVSS score of 6.5 reflects a medium severity level, balancing the ease of exploitation with the limited scope of impact. No known exploits are currently reported in the wild, and no patches or mitigations have been linked yet. Given libsoup's role in HTTP communications, any server or service relying on it for processing multipart HTTP requests is potentially vulnerable. This includes web servers, APIs, or other network services running on RHEL 10 or other Linux distributions using vulnerable libsoup versions. The vulnerability's exploitation vector is network-based, requiring no privileges or user interaction, making it a concern for exposed services handling multipart HTTP content.
Potential Impact
For European organizations, the impact of CVE-2025-4969 depends on their use of Red Hat Enterprise Linux 10 or other Linux distributions incorporating the vulnerable libsoup version. Organizations running web servers, APIs, or middleware that process multipart HTTP requests using libsoup are at risk of information disclosure and potential service disruption. Confidential data leakage could include sensitive configuration, credentials, or user data residing in memory adjacent to the buffer read out-of-bounds. This could lead to privacy violations under GDPR and other data protection regulations, resulting in legal and reputational consequences. Additionally, service instability or crashes caused by the vulnerability could disrupt business operations, especially for critical infrastructure or online services. Since the vulnerability can be exploited remotely without authentication, exposed internet-facing services are particularly vulnerable. European organizations in sectors such as finance, healthcare, government, and telecommunications, which often rely on RHEL for secure and stable operations, may face increased risk. The absence of known exploits currently reduces immediate threat but does not eliminate the risk of future exploitation, especially as threat actors often target widely used open-source libraries.
Mitigation Recommendations
To mitigate CVE-2025-4969, European organizations should: 1) Monitor Red Hat and other Linux distribution security advisories closely for patches or updates addressing this vulnerability and apply them promptly once available. 2) Conduct an inventory of all systems running RHEL 10 or other Linux distributions that include libsoup, focusing on services processing multipart HTTP requests. 3) Where possible, implement network-level protections such as Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) to detect and block suspicious multipart HTTP payloads that could exploit this flaw. 4) Restrict exposure of vulnerable services to untrusted networks by using network segmentation, VPNs, or access control lists to limit incoming traffic. 5) Employ runtime application self-protection (RASP) or memory protection technologies to detect abnormal memory access patterns that may indicate exploitation attempts. 6) Review application logs and network traffic for anomalous multipart HTTP requests that could signal exploitation attempts. 7) Consider disabling or replacing libsoup-dependent components if immediate patching is not feasible, or implement additional input validation at the application layer to verify multipart message integrity before processing.
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Technical Details
- Data Version
- 5.1
- Assigner Short Name
- redhat
- Date Reserved
- 2025-05-19T21:14:09.795Z
- Cisa Enriched
- false
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 682d38bc4d7c5ea9f4b3fabd
Added to database: 5/21/2025, 2:21:48 AM
Last enriched: 7/31/2025, 12:38:36 AM
Last updated: 8/11/2025, 7:57:46 PM
Views: 40
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