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| author | Even Rouault <even.rouault@spatialys.com> | 2019-04-20 17:49:37 +0200 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-04-20 17:49:37 +0200 |
| commit | 318dab0d074a7bfd9d0724e674777aa10422d4e6 (patch) | |
| tree | fa641e89575500ce248f3c3195b858b3aaf7bdc3 | |
| parent | e1da8e5f6933bfb914dccb26a755a23b5ce9f36f (diff) | |
| download | PROJ-318dab0d074a7bfd9d0724e674777aa10422d4e6.tar.gz PROJ-318dab0d074a7bfd9d0724e674777aa10422d4e6.zip | |
omerc: validate lat_1 and lat_2 to avoid divison by zero
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14384
Credit to OSS Fuzz
| -rw-r--r-- | src/projections/omerc.cpp | 2 | ||||
| -rw-r--r-- | test/gie/builtins.gie | 10 |
2 files changed, 12 insertions, 0 deletions
diff --git a/src/projections/omerc.cpp b/src/projections/omerc.cpp index e07c209e..0de3aa7d 100644 --- a/src/projections/omerc.cpp +++ b/src/projections/omerc.cpp @@ -154,6 +154,8 @@ PJ *PROJECTION(omerc) { phi1 = pj_param(P->ctx, P->params, "rlat_1").f; lam2 = pj_param(P->ctx, P->params, "rlon_2").f; phi2 = pj_param(P->ctx, P->params, "rlat_2").f; + if (fabs(phi1) > M_HALFPI || fabs(phi2) > M_HALFPI) + return pj_default_destructor(P, PJD_ERR_LAT_LARGER_THAN_90); if (fabs(phi1 - phi2) <= TOL || (con = fabs(phi1)) <= TOL || fabs(con - M_HALFPI) <= TOL || diff --git a/test/gie/builtins.gie b/test/gie/builtins.gie index 235771d5..49b135d9 100644 --- a/test/gie/builtins.gie +++ b/test/gie/builtins.gie @@ -4013,6 +4013,16 @@ operation +proj=omerc +lat_1=0.8 +a=6400000 +b=.4 ------------------------------------------------------------------------------- expect failure errno invalid_eccentricity +------------------------------------------------------------------------------- +operation +proj=omerc +lat_1=91 +------------------------------------------------------------------------------- +expect failure errno lat_larger_than_90 + +------------------------------------------------------------------------------- +operation +proj=omerc +lat_2=91 +------------------------------------------------------------------------------- +expect failure errno lat_larger_than_90 + =============================================================================== Ortelius Oval |