Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-2369: libsoup: heap buffer overflow in soup_content_sniffer_sniff CVE-2026-1539: A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended destinations. When handling HTTP redirects, libsoup removes the Authorization header but does not remove the Proxy-Authorization header if the request is redirected to a different host. As a result, sensitive proxy credentials may be leaked to third-party servers. Applications using libsoup for HTTP communication may unintentionally expose proxy authentication data. CVE-2026-1536: A flaw was found in libsoup. An attacker who can control the input for the Content-Disposition header can inject CRLF (Carriage Return Line Feed) sequences into the header value. These sequences are then interpreted verbatim when the HTTP request or response is constructed, allowing arbitrary HTTP headers to be injected. This vulnerability can lead to HTTP header injection or HTTP response splitting without requiring authentication or user interaction.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | libsoup3 | 0:3.6.5-56.amzn2023 |
| Amazon Linux · 2023 | libsoup3-debuginfo | 0:3.6.5-56.amzn2023 |
| Amazon Linux · 2023 | libsoup3-debugsource | 0:3.6.5-56.amzn2023 |
| Amazon Linux · 2023 | libsoup3-devel | 0:3.6.5-56.amzn2023 |
| Amazon Linux · 2023 | libsoup3-doc | 0:3.6.5-56.amzn2023 |
Vulnerabilities 3
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Medium 6.5
Libsoup: libsoup: buffer overread due to integer underflow when handling zero-length resources
A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a buffer overread. This can allow an attacker to potentially access sensitive information or cause an application level deni…
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Medium 5.8
Libsoup: libsoup: http header injection or response splitting via crlf injection in content-disposition header
A flaw was found in libsoup. An attacker who can control the input for the Content-Disposition header can inject CRLF (Carriage Return Line Feed) sequences into the header value. These sequences are then interpreted verbatim when the HTTP request or response …
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Medium 5.8
Libsoup: libsoup: credential leakage via http redirects
A flaw was found in the libsoup HTTP library that can cause proxy authentication credentials to be sent to unintended destinations. When handling HTTP redirects, libsoup removes the Authorization header but does not remove the Proxy-Authorization header if th…