Insecure Transport: HTTP GET

ABSTRACT

標識調用使用 HTTP GET（而非 POST）方法將數據發送到服務器。

EXPLANATION

使用 GET 方法的 HTTP 請求允許將 URL 和請求參數緩存到瀏覽器的 URL 緩存、中間代理和服務器日志中。這可能將敏感信息泄露給不具備相應數據權限的人。
例 1：以下代碼使用 GET HTTP 方法而非 POST 來發送 HTTP 請求。

...
	NSString * const USER_URL = @"https://www.somesvr.com/someapp/user";
...
	NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:USER_URL]];
	[request setHTTPMethod:@"GET"];
...

例 2：如果應用程序使用 NSURLRequest，則默認的 HTTP 方法為 GET。

...
	NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.apple.com/"]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:60.0];
	NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
	if (theConnection) {
	// Create the NSMutableData to hold the received data.
	// receivedData is an instance variable declared elsewhere.
		receivedData = [[NSMutableData data] retain];
	} else {
...

REFERENCES

[1] Standards Mapping - OWASP Top 10 2007 - (OWASP 2007) A9 Insecure Communications

[2] Standards Mapping - OWASP Top 10 2010 - (OWASP 2010) A9 Insufficient Transport Layer Protection

[3] Standards Mapping - Security Technical Implementation Guide Version 3 - (STIG 3) APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[4] Standards Mapping - Security Technical Implementation Guide Version 3.4 - (STIG 3.4) APP3250.1 CAT I, APP3250.2 CAT I, APP3250.3 CAT II, APP3250.4 CAT II

[5] Standards Mapping - Common Weakness Enumeration - (CWE) CWE ID 598

[6] HTTPS Data Exposure - GET vs POST Michael Coates

[7] Standards Mapping - Web Application Security Consortium 24 + 2 - (WASC 24 + 2) Information Leakage

[8] Standards Mapping - SANS Top 25 2010 - (SANS 2010) Porous Defenses - CWE ID 311

[9] Standards Mapping - SANS Top 25 2011 - (SANS Top 25 2011) Porous Defenses - CWE ID 311

[10] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 - (PCI 1.2) Requirement 4.1, Requirement 6.3.1.4, Requirement 6.5.9

[11] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 - (PCI 1.1) Requirement 4.1, Requirement 6.5.10

[12] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 - (PCI 2.0) Requirement 4.1, Requirement 6.5.4

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