CARVIEW |
Select Language
HTTP/2 200
date: Wed, 23 Jul 2025 02:59:22 GMT
content-type: text/html; charset=utf-8
vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With
x-repository-download: git clone https://github.com/cronokirby/saferith.git
etag: W/"fac1f7efbbf67c211ed5e0eac792b2d4"
cache-control: max-age=0, private, must-revalidate
strict-transport-security: max-age=31536000; includeSubdomains; preload
x-frame-options: deny
x-content-type-options: nosniff
x-xss-protection: 0
referrer-policy: no-referrer-when-downgrade
content-security-policy: default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net/ productionresultssa1.blob.core.windows.net/ productionresultssa2.blob.core.windows.net/ productionresultssa3.blob.core.windows.net/ productionresultssa4.blob.core.windows.net/ productionresultssa5.blob.core.windows.net/ productionresultssa6.blob.core.windows.net/ productionresultssa7.blob.core.windows.net/ productionresultssa8.blob.core.windows.net/ productionresultssa9.blob.core.windows.net/ productionresultssa10.blob.core.windows.net/ productionresultssa11.blob.core.windows.net/ productionresultssa12.blob.core.windows.net/ productionresultssa13.blob.core.windows.net/ productionresultssa14.blob.core.windows.net/ productionresultssa15.blob.core.windows.net/ productionresultssa16.blob.core.windows.net/ productionresultssa17.blob.core.windows.net/ productionresultssa18.blob.core.windows.net/ productionresultssa19.blob.core.windows.net/ github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
server: github.com
content-encoding: gzip
accept-ranges: bytes
set-cookie: _gh_sess=Z5met9qp1uF2Zxzz%2F59GssHN1aQnX2VDBneJyZwFhsyJtXUL8SlWemH%2FhpAk9HlDYHpKyAJPztVKa0ChHkW5ZmDcAjswW4l0Kl8qoerElRvN47BqbjKYv%2BWlVk1TOs%2BsenHu2%2F2Uwf3eLHplMRCC2T9A8CTJ%2FYd2dVD1keCnrkBPbiIslaXQncf%2Br3LRJ0zAB7zkCI2O2hfH2zcdIeTU4UT%2BvvSOyOuMpxCq9CeoHRw%2Fd2lGhNdgrIBT4rLCbutvEJXBDWNEiPZd1t2Haoh57A%3D%3D--NiUdYVSiauUMUGGA--4m5NottAjEM2Av03wKBbqw%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
set-cookie: _octo=GH1.1.594231373.1753239561; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 02:59:21 GMT; Secure; SameSite=Lax
set-cookie: logged_in=no; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 02:59:21 GMT; HttpOnly; Secure; SameSite=Lax
x-github-request-id: 8702:261FF2:296D19:3AA9CA:68805009
Bug: ModSqrt entered infinite loop with p == 1 · cronokirby/saferith@d39f5a2 · GitHub
Skip to content
Navigation Menu
{{ message }}
-
Notifications
You must be signed in to change notification settings - Fork 14
Commit d39f5a2
Bug: ModSqrt entered infinite loop with p == 1
Thanks to Eric Cornelissen for discovering and responsibly reporting
this vulnerability.
The problem was that our tonelliShanks algorithm needed to calculate the
number of least significant zeros in p - 1. This was done by shifting
right until the LSB becomes 1. With p == 1, this process never ends,
because p - 1 == 0, sending us into an infinite loop.
This could be a potential vulnerability, because if a modulus can be
controlled by an adversary, they can cause a process to deadlock.
The fix is to simply check if p == 1, and return 0 in that case, which
makes perfect sense mathematically.
Checking the value of the modulus is also fine from a leakage
perspective, because ModSqrt is explicitly allowed to leak the value of
the modulus.
Co-authored-by: Eric Cornelissen <ericornelissen@gmail.com>1 parent d98b039 commit d39f5a2Copy full SHA for d39f5a2
File tree
Expand file treeCollapse file tree
2 files changed
+13
-0
lines changedFilter options
Expand file treeCollapse file tree
2 files changed
+13
-0
lines changed+7Lines changed: 7 additions & 0 deletions
Original file line number | Diff line number | Diff line change | |
---|---|---|---|
| |||
1868 | 1868 |
| |
1869 | 1869 |
| |
1870 | 1870 |
| |
| 1871 | + | |
| 1872 | + | |
| 1873 | + | |
| 1874 | + | |
| 1875 | + | |
| 1876 | + | |
| 1877 | + | |
1871 | 1878 |
| |
1872 | 1879 |
| |
1873 | 1880 |
| |
|
+6Lines changed: 6 additions & 0 deletions
Original file line number | Diff line number | Diff line change | |
---|---|---|---|
| |||
1075 | 1075 |
| |
1076 | 1076 |
| |
1077 | 1077 |
| |
| 1078 | + | |
| 1079 | + | |
| 1080 | + | |
| 1081 | + | |
| 1082 | + | |
| 1083 | + | |
1078 | 1084 |
| |
1079 | 1085 |
| |
1080 | 1086 |
| |
|
You can’t perform that action at this time.
0 commit comments