CVE-2021-26691
Critical
Description
In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow
SeverityCritical
CVSS9.8
Exploit probability99. percentile68.1%
Product
Apache Http Server
PublishedJun 10, 2021
First seenJun 10, 2021
Weakness typeCWE-122CWE-122
How to fix
Update
- oracle secure_backup18.1.0.1.0 or later
Vendor advisories
- debian.org/security/2021/dsa-4937
- security.gentoo.org/glsa/202107-38
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache http_server | 2.4.0 ≤ v ≤ 2.4.46 | — |
| debian debian_linux | 9.0, 10.0 | — |
| fedoraproject fedora | 34, 35 | — |
| oracle enterprise_manager_ops_center | 12.4.0.0 | — |
| oracle instantis_enterprisetrack | 17.1, 17.2, 17.3 | — |
| oracle secure_backup | v < 18.1.0.1.0 | 18.1.0.1.0 |
| oracle zfs_storage_appliance_kit | 8.8 | — |
| netapp cloud_backup | No range specified | — |
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