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Validate IpSecAlgorithm Length

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Improve the Validation of IpSecAlgorithm by
explicitly checking the length in addition to
the truncation length (previously an oversight).
In addition, we now check the lengths during
un-parceling, which will catch someone maliciously
manually building a parcel and passing it, bypassing
the checks in the constructor.

Bug: 68780091
Test: runtest -x IpSecAlgorithmTest.java
Change-Id: I8172762617264d34f47d5144336464510f07a701
This commit is contained in:
Nathan Harold
2017-11-09 16:49:33 -08:00
parent c80a1f23f3
commit 82c3470df9
2 changed files with 117 additions and 2 deletions
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4
tests/net/java/android/net/IpSecConfigTest.java
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@@ -71,7 +71,7 @@ public class IpSecConfigTest {
c.setAuthentication(
IpSecTransform.DIRECTION_OUT,
new IpSecAlgorithm(
IpSecAlgorithm.AUTH_HMAC_SHA1,
IpSecAlgorithm.AUTH_HMAC_MD5,
new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 0}));
c.setSpiResourceId(IpSecTransform.DIRECTION_OUT, 1984);
c.setEncryption(
@@ -82,7 +82,7 @@ public class IpSecConfigTest {
c.setAuthentication(
IpSecTransform.DIRECTION_IN,
new IpSecAlgorithm(
IpSecAlgorithm.AUTH_HMAC_SHA1,
IpSecAlgorithm.AUTH_HMAC_MD5,
new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 0xA, 0xB, 0xC, 0xD, 0xE, 0xF, 1}));
c.setSpiResourceId(IpSecTransform.DIRECTION_IN, 99);
assertParcelingIsLossless(c);