Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-61725: net/mail: excessive CPU consumption in ParseAddress The ParseAddress function constructed domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this could cause excessive CPU consumption. CVE-2025-61724: net/textproto: excessive CPU consumption in Reader.ReadResponse The Reader.ReadResponse function constructed a response string through repeated string concatenation of lines. When the number of lines in a response is large, this could cause excessive CPU consumption. CVE-2025-61723: encoding/pem: quadratic complexity when parsing some invalid inputs Due to the design of the PEM parsing function, the processing time for some inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs. CVE-2025-58189: crypto/tls: ALPN negotiation errors can contain arbitrary text The crypto/tls conn.Handshake method returns an error on the server-side when ALPN negotation fails which can contain arbitrary attacker controlled information provided by the client-side of the connection which is not escaped. This affects programs which log these errors without any additional form of sanitization, and may allow injection of attacker controlled information into logs. CVE-2025-58188: crypto/x509: panic when validating certificates with DSA public keys Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains. CVE-2025-58187: crypto/x509: quadratic complexity when checking name constraints Due to the design of the name constraint checking algorithm, the processing time of some inputs scales non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains. CVE-2025-58186: net/http: lack of limit when parsing cookies can cause memory exhaustion Despite HTTP headers having a default limit of 1 MB, the number of cookies that can be parsed did not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption. net/http now limits the number of cookies accepted to 3000, which can be adjusted using the httpcookiemaxnum GODEBUG option. CVE-2025-58185: encoding/asn1: pre-allocating memory when parsing DER payload can cause memory exhaustion When parsing DER payloads, memories were being allocated prior to fully validating the payloads. This permits an attacker to craft a big empty DER payload to cause memory exhaustion in functions such as asn1.Unmarshal, x509.ParseCertificateRequest, and ocsp.ParseResponse. CVE-2025-58183: archive/tar: unbounded allocation when parsing GNU sparse map tar.Reader did not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions could cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input could result in large allocations. CVE-2025-47912: net/url: insufficient validation of bracketed IPv6 hostnames The Parse function permitted values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://[::1]/". IPv4 addresses and hostnames must not appear within square brackets. Parse did not enforce this requirement.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | rclone | 0:1.55.1-1.amzn2.0.3 |
| Amazon Linux · 2 | rclone-debuginfo | 0:1.55.1-1.amzn2.0.3 |
Vulnerabilities 10
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High 7.5
Quadratic complexity when checking name constraints in crypto/x509
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
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High 7.5
Panic when validating certificates with DSA public keys in crypto/x509
Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.
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High 7.5
Quadratic complexity when parsing some invalid inputs in encoding/pem
The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs.
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High 7.5
Excessive CPU consumption in ParseAddress in net/mail
The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.
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Medium 5.3
Insufficient validation of bracketed IPv6 hostnames in net/url
The Parse function permits values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://[…
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Medium 5.3
Parsing DER payload can cause memory exhaustion in encoding/asn1
Parsing a maliciously crafted DER payload could allocate large amounts of memory, causing memory exhaustion.
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Medium 5.3
Lack of limit when parsing cookies can cause memory exhaustion in net/http
Despite HTTP headers having a default limit of 1MB, the number of cookies that can be parsed does not have a limit. By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large mem…
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Medium 5.3
ALPN negotiation error contains attacker controlled information in crypto/tls
When Conn.Handshake fails during ALPN negotiation the error contains attacker controlled information (the ALPN protocols sent by the client) which is not escaped.
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Medium 5.3
Excessive CPU consumption in Reader.ReadResponse in net/textproto
The Reader.ReadResponse function constructs a response string through repeated string concatenation of lines. When the number of lines in a response is large, this can cause excessive CPU consumption.
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Medium 4.3
Unbounded allocation when parsing GNU sparse map in archive/tar
tar.Reader does not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions can cause a Reader to read an unbounded amount of data from the archiv…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-47912.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58183.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58185.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58186.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58187.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58188.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-58189.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-61723.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-61724.html
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-61725.html