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QIpAddress: reject IPv6 addresses with more than 4 hex digits

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Matches glibc commit 9a0cc8c1bd7645bf3c988890ffb59639c07a5812.

[ChangeLog][QtCore][QUrl] Fixed a bug in parsing IPv6 addresses with
more than 4 hex digits in a component.

[ChangeLog][QtNetwork][QHostAddress] Fixed a bug in parsing IPv6
addresses with more than 4 hex digits in a component.

[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=9a0cc8c1bd7645bf3c988890ffb59639c07a5812

Change-Id: I2701038131d91eb108aebb3bec16278e4efe3de2
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
This commit is contained in:
Thiago Macieira 2018-03-14 12:13:55 -07:00
parent 53f82185e9
commit 2fb706f9a8
2 changed files with 9 additions and 4 deletions
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5
src/corelib/io/qipaddress.cpp
View File

@ -216,7 +216,10 @@ const QChar *parseIp6(IPv6Address &address, const QChar *begin, const QChar *end
quint64 ll = qstrtoull(ptr, &endptr, 16, &ok);
quint16 x = ll;
if (!ok || ll != x)
// Reject malformed fields:
// - failed to parse
// - too many hex digits
if (!ok || endptr > ptr + 4)
return begin + (ptr - buffer.data());
if (*endptr == '.') {

8
tests/auto/corelib/io/qipaddress/tst_qipaddress.cpp
View File

@ -288,9 +288,6 @@ void tst_QIpAddress::parseIp6_data()
<< "ffee:ddcc:bbaa:9988:7766:5544:3322:1100"
<< Ip6(0xffee, 0xddcc, 0xbbaa, 0x9988, 0x7766, 0x5544, 0x3322, 0x1100);
// too many zeroes
QTest::newRow("0:0:0:0:0:0:0:00103") << "0:0:0:0:0:0:0:00103" << Ip6(0,0,0,0,0,0,0,0x103);
// double-colon
QTest::newRow("::1:2:3:4:5:6:7") << "::1:2:3:4:5:6:7" << Ip6(0,1,2,3,4,5,6,7);
QTest::newRow("1:2:3:4:5:6:7::") << "1:2:3:4:5:6:7::" << Ip6(1,2,3,4,5,6,7,0);
@ -382,6 +379,9 @@ void tst_QIpAddress::invalidParseIp6_data()
// too big number
QTest::newRow("0:0:0:0:0:0:0:10103") << "0:0:0:0:0:0:0:10103";
// too many zeroes
QTest::newRow("0:0:0:0:0:0:0:00103") << "0:0:0:0:0:0:0:00103";
// too short
QTest::newRow("0:0:0:0:0:0:0:") << "0:0:0:0:0:0:0:";
QTest::newRow("0:0:0:0:0:0:0") << "0:0:0:0:0:0:0";
@ -438,6 +438,8 @@ void tst_QIpAddress::invalidParseIp6()
#if defined(__GLIBC__) && defined(AF_INET6)
Ip6 inet_result;
bool inet_ok = inet_pton(AF_INET6, address.toLatin1(), &inet_result.u8);
if (__GLIBC_MINOR__ < 26)
QEXPECT_FAIL("0:0:0:0:0:0:0:00103", "Bug fixed in glibc 2.26", Continue);
QVERIFY(!inet_ok);
#endif